Nose agenesis—also called congenital arhinia—means a baby is born without the external nose and usually without the normal nasal passages inside. Because newborns prefer to breathe through the nose, this condition can cause serious breathing and feeding problems right after birth. It is extremely rare, and many babies also have other mid-face or eye differences. Doctors confirm the diagnosis by examining the baby and by imaging tests (CT/MRI). Some babies have it as part of a genetic syndrome called Bosma arhinia microphthalmia syndrome (BAMS). MedlinePlus+3PMC+3PMC+3
Nose agenesis—also called congenital arhinia—means a baby is born without normal nasal structures. It can be complete (no external nose or nasal cavities) or partial (some structures present). Babies may have serious breathing and feeding problems right after birth because newborns prefer to breathe through the nose. Some children have arhinia alone; others have it as part of a syndrome with eye, palate, or hormonal differences. Management always prioritizes keeping the airway open and ensuring nutrition, then planning reconstruction later. PMC+1
Other names
Doctors and articles may use several names for the same condition: arhinia, congenital arhinia, nasal agenesis, congenital absence of the nose, total arhinia, partial arhinia (also called hyporhinia when a small part of the nose is present). Some authors reserve total arhinia for complete absence of the nose and internal nasal airway, and partial arhinia/hyporhinia when any nasal opening or structure remains. PMC+1
Nose agenesis is a birth difference where the baby has no formed nose and often no normal nasal cavities on the inside. The upper airway therefore does not have the usual route for air to pass from the nostrils to the throat. In many cases the smell system (olfactory bulbs and tracts) is also missing, which can lead to no sense of smell (anosmia). Because the nose helps babies breathe while feeding, the absence of the nose can cause breathing distress and poor feeding in the first hours of life. Babies need quick airway support, careful feeding plans, and a team to plan later reconstruction. PMC+1
Why does it happen?
During early pregnancy, the nose begins from small surface areas called the nasal placodes. These grow into medial and lateral nasal processes and then form the nostrils and the internal nasal passages. In arhinia, proposed mechanisms include: failure of the nasal placodes to form or grow, premature fusion of the nasal processes, failure of the normal epithelial plug to open, and neural crest cell migration problems. These early developmental errors can also affect the olfactory bulbs/tracts. PMC
Types
1) Total arhinia. The external nose and the internal nasal cavities are absent; the smell system is usually absent too. Babies almost always have major breathing and feeding problems at birth. Semantic Scholar
2) Partial arhinia (hyporhinia). Some nasal tissue or openings are present (one or both sides). Problems with breathing and smell vary by how much is missing. PMC+1
3) Isolated arhinia. The nose difference occurs by itself, with few or no other body differences. This is rare. PMC
4) Syndromic arhinia (part of a syndrome). The most recognized syndrome is BAMS—Babies have absent/small nose, eye differences (microphthalmia, coloboma, cataracts), and puberty/hormone problems (hypogonadotropic hypogonadism). Variants in the SMCHD1 gene are a known cause of BAMS. PMC+3MedlinePlus+3MedlinePlus+3
5) Arhinia with midline brain/face differences. Some babies have holoprosencephaly or other midline defects along with partial arhinia. turkjpediatr.org
Causes
Important note: for most babies with arhinia, the exact cause is unknown. Researchers have identified one clear genetic cause in BAMS (SMCHD1 variants). Other items below are proposed mechanisms or known associations, not always proven causes in every child. PubMed+1
1) SMCHD1 gene variants (BAMS). Changes in the SMCHD1 gene disrupt epigenetic control during facial development and can produce arhinia with eye and puberty problems. Most reported mutations are de novo (new in the child). PubMed+1
2) De novo mutation without family history. Many cases happen even when parents do not carry the variant, highlighting a spontaneous event during early development. PubMed
3) Epigenetic dysregulation. SMCHD1 helps add DNA methylation marks. Disturbance of this process may alter gene activity in the face and nose fields. MedlinePlus
4) Failure of nasal placode formation. If the initial surface tissue (placode) does not form, later nasal structures cannot develop. PMC
5) Arrest of growth of medial and lateral nasal processes. These facial buds must grow and fuse; poor growth can stop normal nose formation. PMC
6) Premature fusion of medial nasal processes. Early fusion can block normal shaping of the nostrils and bridge. PMC
7) Failure of epithelial plug resorption (weeks 13–15). Normally, a temporary tissue plug opens to form patent nostrils; failure leaves no canal. PMC
8) Neural crest migration defects. Neural crest cells build much of the face; migration problems may cause severe nasal hypoplasia or agenesis. PMC
9) Agenesis of olfactory bulbs/tracts linked to facial field errors. The smell system often fails to develop when the early nasal field is disrupted. PMC
10) Syndromic association with BAMS. When arhinia occurs with small eyes and delayed puberty, BAMS is the unifying diagnosis. MedlinePlus
11) Association with midline brain anomalies (e.g., holoprosencephaly). Midline developmental errors can co-occur with partial arhinia. turkjpediatr.org
12) Association with other craniofacial anomalies. Reports describe co-existing palate, eye, ear, and jaw differences, suggesting wider facial patterning issues. PMC
13) Possible chromosomal or other gene factors (not yet identified). Some cases likely reflect yet-unknown genes or chromosomal changes that affect facial morphogenesis. MedlinePlus
14) Vascular disruption theory (hypothesis). Early blood-supply problems to the face could damage developing nasal tissues (proposed in craniofacial literature; not consistently proven for arhinia). PMC
15) Prenatal development timing errors. Even brief timing errors during the critical weeks of facial formation can have large effects on the nose. PMC
16) Mechanical factors are unlikely but possible contributors. Severe constraints or bands are rarely discussed; evidence is limited. Clinically, genetic/developmental factors dominate. PMC
17) Unknown environmental factors. No single exposure has been confirmed; most families have no known pregnancy exposure linked to the condition. PMC
18) Consanguinity/family clustering is uncommon. Most reported cases are isolated; BAMS mutations are often de novo. PubMed
19) Endocrine axis involvement in BAMS (effect, not cause). In BAMS, pituitary-gonadal hormone deficiency co-occurs; this reflects the syndrome rather than causing the nose difference. MedlinePlus
20) Multifactorial origin in many infants. For most individual babies, arhinia likely reflects a combination of genetic risk and early developmental events. PMC
Symptoms and signs
1) Trouble breathing at birth. Newborns prefer nose breathing; without nasal passages, air cannot flow easily, so babies show chest retractions, fast breathing, or bluish color. Immediate airway support is common. PMC+1
2) Feeding difficulty. Babies cannot coordinate suck-swallow-breathe well because they cannot breathe through the nose while feeding. Special feeding plans or tubes may be needed. PMC
3) No visible nose / very small nasal area. The face lacks the usual nasal bridge and nostrils; the upper lip and midface can look flat. PMC
4) No sense of smell (anosmia). The smell system is often absent or underdeveloped, so the child cannot smell. Older children may notice poor smell and taste. PMC+1
5) Eye differences. Small eyes (microphthalmia), cataracts, or colobomas can occur, especially in BAMS. MedlinePlus+1
6) Puberty/hormone problems in adolescence (BAMS). In BAMS, the pituitary-gonadal hormone signals are low (hypogonadotropic hypogonadism), so puberty is delayed and sexual development is incomplete unless treated. MedlinePlus+1
7) Sleep-disordered breathing. Mouth breathing at night and small midface structures can cause snoring or obstructive events. PMC
8) Speech resonance changes. The nose helps shape voice resonance; without it, speech can sound different, and therapy may help. PMC
9) Recurrent mouth dryness and oral issues. Constant mouth breathing can dry the mouth and irritate the throat. PMC
10) Difficulty clearing secretions. The nose normally filters and humidifies air; without it, secretions may pool in the mouth and throat. PMC
11) Problems with smell-linked safety. Not sensing smoke, gas leaks, or spoiled food increases risk; families need safety education. PMC
12) Facial/cranial differences beyond the nose. Some babies have palate, ear, or jaw differences. Evaluation looks for the full pattern. PMC
13) Feeding-related weight concerns. Early feeding difficulty can slow weight gain; nutrition support is important. PMC
14) Psychosocial stress. Visible facial differences and multiple procedures can affect self-esteem; support is vital. (General craniofacial care principle echoed in reports.) PMC
15) Eye-related vision problems (BAMS). Vision can be limited by microphthalmia, coloboma, or cataracts; early eye care is needed. PMC
Diagnostic tests
A) Physical examination (bedside assessment)
1) Full newborn exam focused on the airway. The clinician checks breathing effort, oxygen color, retractions, and whether the baby can maintain airway without a nose; urgent airway support is arranged if needed. PMC+1
2) Facial inspection and palpation. The doctor looks for the presence/absence of nasal bridge, nostrils, columella, and feels the nasal bone area to judge how much structure is missing. PMC
3) Oral cavity and palate exam. Palate shape and clefts are checked because other facial differences may co-exist and affect breathing/feeding. PMC
4) Eye and ear exam. The team screens for microphthalmia, coloboma, cataract, and ear anomalies that may signal BAMS or a broader syndrome. MedlinePlus+1
5) Growth and vital signs monitoring. Oxygen level, heart rate, and weight gain are tracked to guide airway/feeding support. PMC
B) “Manual” bedside tests (simple functional checks)
6) Gentle attempt to pass a soft nasal catheter. In typical newborn care a catheter can pass through each nostril; in arhinia this is impossible or there is no nostril, confirming blocked/absent airway. (Performed carefully by trained staff.) PMC
7) Mirror fog test under the nasal area. In a normal nose, exhaled air fogs a mirror under the nostrils; lack of fog supports absent airflow through the nose. PMC
8) Feeding observation (suck-swallow-breathe). Clinicians watch for choking, desaturation, or pauses during feeding that suggest nasal airflow is not available. PMC
9) Airway response to an oral airway or oropharyngeal airway. Improvement in breathing when a mouth airway is placed supports nasal obstruction/absence as the key problem. PMC
C) Laboratory and pathological tests
10) Genetic testing for BAMS/SMCHD1. When arhinia is present—especially with eye findings or delayed puberty later—DNA testing can look for SMCHD1 variants. This confirms a syndromic diagnosis and guides genetic counseling. PubMed+1
11) Hormone tests for hypogonadotropic hypogonadism (age-appropriate). In older children/teens with BAMS, tests such as LH, FSH, estradiol/testosterone help confirm low pituitary signals that delay puberty. MedlinePlus
12) Blood gases in newborn respiratory distress. If the baby is struggling, arterial or capillary blood gases check oxygen and carbon dioxide levels to guide urgent airway care. PMC
13) Standard newborn screening and basic labs. Routine labs help rule out other causes of breathing problems and assess overall stability for imaging or procedures. PMC
D) Electrodiagnostic / physiologic studies
14) Polysomnography (sleep study) in infants/children. Later in infancy or childhood, a sleep study measures breathing patterns and oxygen during sleep to detect obstructive events from mouth-only breathing or small midface. PMC
15) Objective olfactory testing when age-appropriate. Formal smell tests confirm anosmia/hyposmia in older children with arhinia or BAMS; this documents function for safety counseling. PMC
16) Vision testing and electrophysiology if indicated. Because eye anomalies are common in BAMS, vision assessments (and sometimes ERG) help document visual function. MedlinePlus+1
E) Imaging tests
17) CT scan of facial bones and paranasal region. CT shows the bony nasal aperture, nasal cavities (if any), septum, and relationships needed for surgical planning. It also distinguishes arhinia from other causes of blockage. PMC
18) MRI of the brain and orbits. MRI checks the olfactory bulbs/tracts, pituitary area (when hormone issues are suspected), and looks for midline brain differences, which can affect long-term care. PMC
19) Prenatal ultrasound. In some pregnancies, careful second- or third-trimester ultrasound can notice absent nasal profile and prompt counseling and delivery planning. Duke OBGYN
20) Fetal MRI (when available). Fetal MRI can define facial and brain structures more clearly before birth, helping families and teams prepare a safe airway plan. Duke OBGYN
Non-pharmacological treatments (therapies and other supports)
(Each item: description ≈150 words + purpose + mechanism)
1) Airway positioning and oral airway training.
Description: Nurses and respiratory therapists teach gentle head/neck positioning to maximize mouth breathing. A soft oropharyngeal airway may be used to keep the tongue forward and maintain an open path for air, particularly during sleep. Parents learn safe handling and signs of distress. Purpose: prevent hypoxia and reduce work of breathing. Mechanism: optimizes upper-airway geometry and bypasses absent nasal passages, keeping a patent route for air movement. AIJCR
2) Tracheostomy care and humidification (when needed).
Description: If a tracheostomy is placed for severe neonatal distress, families learn daily tube care, stoma hygiene, suctioning, and emergency procedures. Heated humidification and sterile saline help keep secretions thin. Purpose: ensure a stable airway at home, reduce mucus plugs, and prevent infection. Mechanism: a trach bypasses the obstructed upper airway; humidification prevents drying of airway mucosa and mucus stasis. SAGE Journals
3) Feeding therapy and safe swallow training.
Description: A speech-language pathologist evaluates swallowing and helps transition from tube to oral feeds if safe. Therapies include paced bottle feeding, specialized nipples, and posture changes. Purpose: maintain growth while minimizing aspiration risk. Mechanism: tailored techniques coordinate suck–swallow–breathe cycles in mouth breathers and those with craniofacial differences. PMC
4) Nutritional support and growth monitoring.
Description: Dietitians plan enough calories and protein, using fortified breast milk or formula, and later balanced solids. Growth is tracked closely; gastrostomy feeding is considered if oral feeding isn’t sufficient. Purpose: support brain and body growth despite early feeding difficulties. Mechanism: reliable calories and micronutrients prevent failure-to-thrive and prepare the child for future surgeries. PMC
5) Secretion management and airway hygiene.
Description: Saline instillation (via mouth/trach as appropriate), gentle suctioning, and chest physiotherapy keep airways clear. Families are taught early signs of viral illness and when to seek care. Purpose: reduce respiratory infections and hospitalizations. Mechanism: thinning and removing secretions improves airflow and gas exchange. Bahrain Medical Bulletin
6) Early craniofacial surgical consultation and staged planning.
Description: Plastic and ENT surgeons examine facial growth, dental occlusion, and midface support. They map out staged nasal reconstruction when the face is larger and donor tissues are available. Purpose: set expectations and timing; coordinate team-based care. Mechanism: planning aligns growth, donor cartilage availability, and airway stability to optimize both function and appearance. ScienceDirect
7) 3-D imaging, digital surgical simulation, and custom guides.
Description: Teams now use CT-based 3-D modeling to simulate nasal framework shape, plan incisions, and even print cutting/positioning guides. Purpose: improve precision, shorten operative time, and enhance symmetry. Mechanism: digital planning translates patient-specific anatomy into operative steps for better predictability. ScienceDirect
8) Tissue expansion (forehead/cheek) before reconstruction.
Description: Surgeons may place expanders under the forehead skin to “grow” extra skin that later becomes the outer nose in a paramedian forehead flap. Purpose: create enough high-quality, color-matched skin for nasal coverage. Mechanism: slow mechanical stretch stimulates skin growth, providing pliable tissue for the new nose. binasss.sa.cr+1
9) Paramedian forehead flap education (family counseling).
Description: Families learn that a classic workhorse for nasal skin is the forehead flap, sometimes done in two or three stages, occasionally with cartilage grafts for strength. Purpose: set realistic timelines and expectations for staged reconstruction. Mechanism: the flap’s robust blood supply supports reliable healing and later refinement. European Review+1
10) Cartilage framework planning (rib/auricular).
Description: To build the internal nasal scaffolding, surgeons often harvest rib or ear cartilage to create columella, dorsum, and alar support. Purpose: achieve a stable, breathable shape that resists contraction. Mechanism: cartilage grafts provide structure so the skin envelope doesn’t collapse and the airway stays open. e-acfs.org
11) Multidisciplinary eye care.
Description: If microphthalmia or other ocular issues are present (as in some BAMS cases), pediatric ophthalmology manages visual development, prosthetics if needed, and amblyopia prevention. Purpose: protect vision and facial symmetry. Mechanism: early stimulation and corrective strategies maximize remaining visual potential during critical windows. National Organization for Rare Disorders
12) Endocrine evaluation and puberty planning (in BAMS).
Description: Adolescents with BAMS often have hypogonadotropic hypogonadism. Endocrinologists plan puberty induction using sex hormones and monitor growth; fertility options can be discussed later. Purpose: ensure normal sexual maturation, bone health, and psychosocial wellbeing. Mechanism: physiologic replacement of absent hormones supports pubertal development and secondary sexual characteristics. National Organization for Rare Disorders
13) Speech and resonance therapy.
Description: Some children develop speech or resonance differences due to altered nasal airflow and palatal anatomy. Speech therapy focuses on articulation and compensatory patterns. Purpose: improve intelligibility and confidence. Mechanism: targeted exercises reshape motor patterns for clearer speech despite structural differences. PMC
14) Psychosocial support and family counseling.
Description: Living with a visible facial difference can be stressful. Counseling connects families to peer networks and prepares children for school and social interactions. Purpose: enhance resilience and mental health. Mechanism: cognitive-behavioral strategies, peer support, and school planning reduce anxiety and improve coping. PubMed
15) Genetic counseling and testing (when indicated).
Description: Families meet a genetics team to review history, discuss SMCHD1 testing, and understand recurrence risks. Purpose: inform future pregnancies and identify associated conditions early. Mechanism: genotype–phenotype counseling guides surveillance and connects families to research. PubMed
16) Infection prevention training.
Description: Education covers hand hygiene, vaccine schedules, and early care plans for colds or bronchiolitis—especially important for children with tracheostomy. Purpose: reduce respiratory complications. Mechanism: basic infection-control steps lower exposure and speed treatment if illness starts. Bahrain Medical Bulletin
17) Perioperative rehabilitation planning.
Description: After reconstruction stages, teams plan wound care, scar massage, silicone sheeting, and sun protection. Purpose: optimize healing and cosmetic results. Mechanism: controlled remodeling and UV avoidance limit hypertrophic scarring and pigment change. e-acfs.org
18) School and developmental services.
Description: Early-intervention programs and individualized education plans (IEPs) support speech, motor, and social development. Purpose: maximize learning and participation. Mechanism: structured therapies target areas affected by early medical complexity. PMC
19) Transition-to-adult-care planning.
Description: Older teens prepare for adult ENT/plastics and endocrine follow-up, including any touch-up procedures. Purpose: maintain continuity of care and autonomy. Mechanism: planned handoff reduces gaps and keeps surveillance on track. PubMed
20) Participation in registries/research (when available).
Description: Because arhinia is rare, joining registries or case series helps improve care for future families and may give access to new planning tools. Purpose: advance knowledge and connect with expert centers. Mechanism: shared de-identified data aggregates outcomes and guides best practices. Orpha
Drug treatments
Important: There is no medicine that “reverses” nose agenesis. Drugs are used to treat associated problems (airway infections, pain, reflux, endocrine issues) and around surgeries. Doses below are examples only; real prescriptions must be individualized by your clinicians.
1) Perioperative antibiotics.
Use: short courses around surgery to prevent surgical-site infection. Class: beta-lactams/others per local protocols. Dose/Time: e.g., cefazolin IV peri-incision, then stop within 24 h if clean case. Purpose: reduce wound infection. Mechanism: bactericidal levels during contamination window. Side effects: allergy, GI upset. e-acfs.org
2) Analgesics after procedures.
Use: acetaminophen ± short opioid course post-op. Class: analgesic/opiates. Dose/Time: weight-based; shortest effective duration. Purpose: pain control to enable breathing/feeding. Mechanism: central COX inhibition ± mu-agonism. Side effects: sedation, constipation (opioids). e-acfs.org
3) Saline nebulization (airway hydration).
Use: sterile isotonic saline by nebulizer via mouth or trach. Class: non-drug solution. Dose/Time: several times/day. Purpose: thin secretions. Mechanism: humidification reduces mucus viscosity. Side effects: cough, transient irritation. Bahrain Medical Bulletin
4) Bronchodilators (when reactive airway disease coexists).
Use: albuterol PRN wheeze. Class: beta-2 agonist. Dose/Time: inhaled, as directed. Purpose: relieve bronchospasm. Mechanism: smooth-muscle relaxation. Side effects: tremor, tachycardia. Bahrain Medical Bulletin
5) Proton-pump inhibitors or H2 blockers (reflux-associated symptoms).
Use: omeprazole or famotidine if reflux aggravates airway or feeding. Class: acid suppression. Dose/Time: weight-based daily. Purpose: reduce reflux injury. Mechanism: decreases gastric acid. Side effects: diarrhea, nutrient interactions (long-term). PMC
6) Antibiotics for lower airway infections (when indicated).
Use: amoxicillin-clavulanate, macrolides, or guideline choices by culture. Class: antibacterials. Dose/Time: per diagnosis. Purpose: treat trach-associated or community infections. Mechanism: pathogen-targeted killing. Side effects: diarrhea, allergy. Bahrain Medical Bulletin
7) Mucolytics (selected cases).
Use: agents like hypertonic saline via specialist guidance. Class: mucolytic. Dose/Time: individualized. Purpose: secretion clearance. Mechanism: osmotic thinning. Side effects: bronchospasm risk. Bahrain Medical Bulletin
8) Topical wound agents (post-reconstruction).
Use: petrolatum or silicone gel for scars. Class: topical barrier. Dose/Time: daily for months. Purpose: improve scar quality. Mechanism: hydration, occlusion, collagen modulation. Side effects: dermatitis. e-acfs.org
9) Antiemetics around anesthesia.
Use: ondansetron. Class: 5-HT3 antagonist. Dose/Time: peri-op. Purpose: reduce vomiting and wound stress. Mechanism: blocks vagal/central 5-HT3. Side effects: constipation, QT risk. e-acfs.org
10) Nasal stent care solutions (when surgical airway channels created).
Use: saline rinses per surgeon protocol (applied to created passage, not native nose). Class: cleansing solution. Dose/Time: multiple daily. Purpose: keep neo-airway patent. Mechanism: prevents crusting/stenosis. Side effects: local irritation. ScienceDirect
11) Sex-steroid replacement in hypogonadotropic hypogonadism (BAMS).
Use: low-dose estrogen/progestin in girls; testosterone in boys, gradually titrated. Class: sex hormones. Dose/Time: pubertal induction per endocrine protocol. Purpose: normal puberty and bone mass. Mechanism: replaces deficient gonadal steroids. Side effects: acne, mood change, BP effects—monitoring required. National Organization for Rare Disorders
12) Gonadotropins (selected fertility care later in life).
Use: hCG/FSH under fertility specialists. Class: pituitary hormone analogs. Dose/Time: individualized cycles. Purpose: induce gametogenesis. Mechanism: stimulates gonads when central signals are low. Side effects: ovarian hyperstimulation, testicular discomfort. National Organization for Rare Disorders
13) Growth hormone (if true GH deficiency coexists).
Use: pediatric endocrinology decision only. Class: peptide hormone. Dose/Time: daily SC per weight. Purpose: improve linear growth in GH deficiency. Mechanism: IGF-1 axis stimulation. Side effects: edema, arthralgia—monitoring needed. National Organization for Rare Disorders
14) Allergy control (if comorbid atopy).
Use: non-sedating antihistamines for cough/itch related to allergies. Class: H1 antagonists. Dose/Time: daily PRN. Purpose: comfort; reduce secretions. Mechanism: histamine blockade. Side effects: headache, drowsiness. Bahrain Medical Bulletin
15) Vaccinations (routine schedule).
Use: routine childhood vaccines, influenza, and pneumococcal per national guidance—especially with trach. Class: immunizations. Dose/Time: schedule-based. Purpose: prevent infections that could worsen breathing. Mechanism: active immunity. Side effects: local soreness, fever. Bahrain Medical Bulletin
16) Short steroid courses (specific post-op edema cases, specialist-directed).
Use: brief systemic or topical steroids per surgeon. Class: corticosteroids. Dose/Time: short course only. Purpose: reduce airway or soft-tissue swelling. Mechanism: anti-inflammatory. Side effects: mood change, hyperglycemia; avoid long-term use in children unless clearly indicated. e-acfs.org
17) Analgesic adjuncts (gabapentinoids/NSAIDs per team).
Use: multimodal pain control to reduce opioids. Class: varies. Dose/Time: peri-op. Purpose: comfort and early mobilization. Mechanism: complementary analgesic pathways. Side effects: sedation, renal/GI caution with NSAIDs. e-acfs.org
18) Antibiotic prophylaxis during trach changes (selected).
Use: not routine; targeted if prior infections. Class: antibacterials. Dose/Time: brief by protocol. Purpose: lower procedure-related infections. Mechanism: transient coverage of likely flora. Side effects: resistance risk—use judiciously. Bahrain Medical Bulletin
19) Anticholinergics for drooling (specific cases).
Use: glycopyrrolate if excessive oral secretions impair care. Class: anticholinergic. Dose/Time: weight-based. Purpose: secretion control. Mechanism: reduces salivary gland output. Side effects: constipation, dry mouth, urinary retention. Bahrain Medical Bulletin
20) Topical antibiotic ointments for donor/recipient sites (short term).
Use: surgeon-directed for wound care. Class: topical antimicrobials. Dose/Time: thin layer for days. Purpose: reduce superficial infection. Mechanism: local bacteriostasis. Side effects: contact dermatitis. e-acfs.org
Dietary molecular supplements (supportive nutrition)
There are no supplements proven to change arhinia anatomy. These ideas support healing and growth in medically complex children; always clear them with your care team.
1) Energy-dense pediatric formulas (or fortified breast milk). Dose: dietitian-directed. Function: ensure enough calories/protein for growth and surgery recovery. Mechanism: optimized macro/micronutrients support tissue repair and immune function. PMC
2) Protein supplementation (whey/casein as prescribed). Dose: per weight. Function: support wound healing and cartilage graft recovery. Mechanism: amino acids for collagen and matrix synthesis. e-acfs.org
3) Vitamin D with calcium (if low). Dose: per lab values. Function: bone health during endocrine therapy and growth. Mechanism: mineralization support. National Organization for Rare Disorders
4) Iron (if iron-deficiency anemia present). Dose: guided by labs. Function: prevent anemia that can impair recovery. Mechanism: hemoglobin synthesis. PMC
5) Zinc (short course if deficient). Dose: per labs. Function: wound healing and immune enzymes. Mechanism: cofactor in collagen cross-linking and immunity. e-acfs.org
6) Omega-3 fatty acids (if tolerated). Dose: pediatric-appropriate. Function: modulate inflammation post-op. Mechanism: eicosanoid balance. e-acfs.org
7) Multivitamin tailored for age. Dose: per label/clinician. Function: cover micronutrient gaps in selective eaters. Mechanism: broad micronutrient support. PMC
8) Fiber supplements (for constipation from opioids/anticholinergics). Dose: age-appropriate. Function: bowel regularity. Mechanism: stool bulk and motility. e-acfs.org
9) Probiotics (case-by-case). Dose: clinician-selected strain. Function: GI tolerance during antibiotics. Mechanism: microbiome support. Bahrain Medical Bulletin
10) Electrolyte solutions during illness. Dose: per dehydration plan. Function: maintain hydration with trach/fever. Mechanism: balanced salts/glucose aid absorption. Bahrain Medical Bulletin
Immunity booster / regenerative / stem-cell drugs” (important safety note)
There are no approved “immunity booster,” regenerative, or stem-cell drugs that correct nose agenesis or have proven benefit for this condition. Tissue-engineering concepts (e.g., cartilage scaffolds, customized frameworks) are surgical/biomaterial techniques—not IV “stem-cell drugs.” Any offers of stem-cell injections for arhinia outside regulated trials should be viewed with extreme caution. Safer alternatives are established reconstructive methods (forehead flaps, cartilage grafts) and enrollment in legitimate clinical research if available. e-acfs.org+1
(Because recommending unproven “stem-cell drugs” would be misleading and unsafe, I’m not listing six such products. If you want, I can help screen any trial listings for legitimacy and ethics.) ScienceDirect
Surgeries (procedures and why they are done)
1) Tracheostomy (neonatal rescue in severe distress).
Procedure: a tube is placed through the neck into the windpipe to secure breathing. Why: when mouth breathing and temporary devices are not enough, trach provides a reliable airway and buys time for growth and planning. SAGE Journals
2) Creation of a nasal airway/neo-choanae (selected infants).
Procedure: surgeons may create channels and place stents to allow airflow through the midface. Why: to reduce reliance on trach and support future reconstruction, chosen case-by-case. SAGE Journals
3) Paramedian forehead flap (skin cover).
Procedure: staged transfer of forehead skin (kept attached by a blood-supply “pedicle” initially) to form the external nose. Why: forehead skin matches color/texture and survives well, forming the outer envelope of the nose. European Review
4) Cartilage framework grafting (rib/ear).
Procedure: harvesting cartilage and carving a framework (columella, dorsum, alae) that supports the new nose. Why: to create durable shape and a patent airway resistant to scarring contraction. e-acfs.org
5) Advanced composite/dual-flap reconstructions.
Procedure: complex combinations such as two forehead flaps (inner lining + outer cover) with cartilage inside, sometimes delayed to late teens/young adulthood. Why: to mimic lining, structure, and skin in one algorithm for better function and aesthetics. PMC
Preventions (what families can actually do)
There is no way to “prevent” congenital arhinia at home, but families and clinicians can prevent complications:
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Early airway plan for colds/flu seasons. Mechanism: quick action reduces hypoxia. Bahrain Medical Bulletin
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Vaccinations on schedule, including influenza. Mechanism: lowers serious infections. Bahrain Medical Bulletin
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Humidification & hydration routines. Mechanism: thins secretions. Bahrain Medical Bulletin
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Hand hygiene & sick-contact avoidance. Mechanism: reduces exposure. Bahrain Medical Bulletin
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Feeding safety plans with therapists. Mechanism: prevents aspiration. PMC
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Regular ENT/craniofacial follow-up. Mechanism: detects stenosis/complications early. ScienceDirect
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Endocrine screening in suspected BAMS. Mechanism: timely puberty management. National Organization for Rare Disorders
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Eye care and protection if microphthalmia/visual issues. Mechanism: safeguard remaining vision. National Organization for Rare Disorders
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Perioperative scar care (sun protection/silicone). Mechanism: better cosmetic outcomes. e-acfs.org
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Emergency teaching (parent CPR/oxygen plan if advised). Mechanism: readiness for acute events. Bahrain Medical Bulletin
When to see doctors (red flags)
Seek urgent care for: fast or labored breathing, pauses in breathing, bluish lips/skin, trouble feeding with coughing/choking, fever with thicker secretions (especially with trach), bleeding from surgical sites, stent blockage, or sudden swelling after surgery. Routine visits: craniofacial/ENT checks as scheduled, ophthalmology if visual concerns, and endocrinology in BAMS for growth/puberty planning. SAGE Journals+1
What to eat and what to avoid (simple guidance)
Eat: age-appropriate, energy-dense meals or fortified feeds to meet growth goals; protein-rich foods for healing; fruits/vegetables for vitamins; adequate fluids for thin secretions. Avoid: choking hazards (especially during early feeding therapy), very spicy/acidic foods if reflux worsens, and supplements not cleared by your clinicians. Nutrition plans should be customized with a pediatric dietitian, especially around surgeries. PMC
Frequently asked questions (FAQ)
1) Can medicines grow a new nose?
No. Medicines can treat symptoms or associated conditions, but the nose itself is reconstructed surgically. ScienceDirect
2) Is arhinia always part of a syndrome?
No. It can be isolated, but sometimes it occurs with other features such as small eyes or hormonal differences (BAMS). MedlinePlus
3) What gene is linked to BAMS?
SMCHD1 variants explain many BAMS cases, though not all arhinia. PubMed
4) Will my baby always need a tracheostomy?
Not always. Some infants manage with mouth breathing or temporary supports; others require trach based on distress. SAGE Journals
5) When is reconstruction done?
Often delayed until later childhood or adolescence to match growth and donor cartilage availability; timing is individualized. ScienceDirect
6) What is a forehead flap?
A staged transfer of forehead skin to form the nose’s outer cover; it’s reliable and widely used. European Review
7) How do surgeons make the nose rigid?
By carving rib or ear cartilage into a framework to support shape and airway. e-acfs.org
8) Can digital planning help?
Yes. 3-D planning and guides can improve precision and outcomes. ScienceDirect
9) Will my child be able to smell?
Many children with complete arhinia lack an olfactory system, so smell may be absent; this varies in partial forms. PMC
10) Are eye problems common?
In BAMS, small eyes or other ocular findings can occur and need early ophthalmology care. National Organization for Rare Disorders
11) Do teens with BAMS need hormone care?
Often yes, for puberty induction due to hypogonadotropic hypogonadism. National Organization for Rare Disorders
12) Are there “stem-cell cures”?
No established stem-cell drugs exist for arhinia; reconstruction relies on surgery and grafts. e-acfs.org
13) Can a created airway narrow again?
Yes; stents and follow-up reduce restenosis risk, and revisions may be needed. ScienceDirect
14) Is breastfeeding possible?
Sometimes, with specialist support and careful coordination of breathing and swallowing; many start with assisted feeds. PMC
15) What is the long-term outlook?
With a stable airway, good nutrition, and staged reconstruction, many children do well; individualized needs vary widely. PubMed
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The article is written by Team RxHarun and reviewed by the Rx Editorial Board Members
Last Updated: September 22, 2025.
