ADULT Syndrome (Acro-Dermato-Ungual-Lacrimal-Tooth Syndrome)

ADULT syndrome is a rare genetic condition that affects parts of the body that come from the ectoderm (skin, hair, nails, teeth, tear ducts) and the limbs (hands and feet). It is usually passed down in families in an autosomal dominant way, which means one changed copy of the gene can cause the condition. The main gene is TP63, which guides early development of skin, limbs, teeth, nails, hair, and the tear drainage system. People with ADULT syndrome may have split or joined fingers or toes, very dry skin with many freckles, sparse hair or eyebrows/eyelashes, nail changes, problems with tear ducts (watery eyes or infections), and missing or small teeth. Breast or nipple development can be small in some people. Intelligence is usually normal. Treatment focuses on relieving symptoms and improving function and quality of life, using eye care, skin care, dental care, hand/foot therapy, and sometimes surgery. There is no cure yet that fixes the TP63 change; care is lifelong and team-based. NCBIGenetic Rare Diseases CenterGeneSkin

ADULT syndrome is a very rare genetic condition that mainly affects body parts that come from the ectoderm (skin, hair, nails, teeth, tear ducts) and sometimes the hands and feet. It is usually caused by a change (variant) in the TP63 gene and is passed in an autosomal dominant pattern (one changed copy is enough). Typical features include dry skin with many freckles, sparse scalp hair and eyebrows/eyelashes, brittle or abnormal nails, missing or cone-shaped teeth with early tooth loss, blockage or absence of the tear-duct openings (causing tearing, eye infections, or eyelid inflammation), under-developed nipples or breast tissue, and in some people, fused fingers/toes or split hand/foot changes. Symptoms often exist at birth and some become more obvious with age. NCBINFEDPMC

Other names

ADULT syndrome is also called Acro-dermato-ungual-lacrimal-tooth syndrome (the full words behind the acronym “ADULT”). You may also see TP63-related ectodermal dysplasia (ADULT type) listed in medical databases. It belongs to the same “TP63-related disorders” family as EEC syndrome, limb-mammary syndrome (LMS), and AEC (Hay-Wells) syndrome, but has its own typical pattern: freckling, breast/nipple hypoplasia, lacrimal duct problems, and tooth/nail/hair changes, with or without limb webbing or split hand/foot. NCBICEDS Association

Types

Doctors do not divide ADULT syndrome into formal “types” the way some other conditions are divided. Instead, they describe a spectrum:

1. Classic ADULT: ectodermal features (skin, hair, nails, teeth), lacrimal duct atresia, many freckles, and breast/nipple hypoplasia, sometimes with syndactyly or ectrodactyly of hands/feet.

2. ADULT without limb malformations: all classic ectodermal and eye/teeth features, but no split hand/foot changes (documented in case reports).

3. Overlap phenotypes within the TP63-related disorder spectrum (for example, features that resemble EEC or LMS), reflecting how different TP63 variants can produce overlapping signs. PMCNCBI

Causes

1. Pathogenic TP63 variant (the core cause in almost all confirmed cases). NCBI

2. Autosomal dominant inheritance (one changed copy can cause the syndrome). NFED

3. De novo variant (a new change in the child even if parents are unaffected). NFED

4. Dominant-negative effect of some TP63 variants that interfere with normal p63 protein function (mechanistic model discussed across TP63 disorders). NCBI

5. Missense variants in functionally important TP63 domains (e.g., DNA-binding or SAM domains) altering gene regulation in ectodermal tissues. GeneSkin

6. Allelic heterogeneity (different TP63 changes can produce an ADULT pattern). NCBI

7. Genotype–phenotype overlap with other TP63 syndromes (EEC, LMS, AEC). NCBI

8. Abnormal ectoderm development (p63 is crucial for skin, hair, nail, tooth, and lacrimal structures). MedlinePlus

9. Disrupted epithelial stem-cell maintenance/differentiation, leading to thin, dry, easily freckled skin and sparse hair. MedlinePlus

10. Altered tooth morphogenesis, causing hypodontia and cone-shaped teeth. NCBI

11. Defective nail matrix development, causing nail dysplasia and pitting. NCBI

12. Abnormal lacrimal duct formation (atresia/stenosis), causing tearing and eye infections. NCBI

13. Partial failure of sweat gland function, leading to heat intolerance. NCBI

14. Breast/nipple hypoplasia due to TP63’s role in mammary tissue development. NCBI

15. Limb patterning disruption in some individuals (syndactyly or split hand/foot). NCBI

16. Variable expressivity (same family, different severity and features). NCBI

17. Possible parental mosaicism (rare, can explain an unaffected parent with more than one affected child). NCBI

18. Environmental mutagens can, in general, create de novo variants, but they do not change inheritance once the variant is present (general genetic principle).

19. No evidence of infectious cause—this is a genetic condition. NCBI

20. No proven prenatal exposure causing ADULT, apart from random occurrence of new TP63 variants (general genetic principle).

Symptoms and signs

1. Frequent freckles that increase with sun over time; skin is usually dry and thin. Freckling is a hallmark detail that helps distinguish ADULT from other TP63 conditions. NCBI

2. Dry, atrophic skin with sensitivity to sunlight; some people report easy irritation or eczema-like rashes. NFED

3. Sparse scalp hair that may be light-colored and fine; eyebrows/eyelashes can also be thin. NCBI

4. Brittle or abnormal nails (nail dysplasia, pits, ridges) on fingers and toes. NCBI

5. Tooth anomalies such as missing teeth (hypodontia), cone-shaped or small teeth, and early loss of adult teeth. Dental issues often become obvious in childhood. NCBI

6. Blocked or absent tear-duct openings (lacrimal puncta) causing constant tearing, recurrent conjunctivitis, or blepharitis. NCBI

7. Heat intolerance due to reduced sweating; most people learn to avoid overheating even though high fevers are uncommon. NCBI

8. Under-developed nipples or breast tissue (common, especially in females), sometimes with widely spaced nipples. NCBI

9. Fused fingers or toes (syndactyly) in some individuals. NCBI

10. Split hand/foot (ectrodactyly) can occur but is not always present. NCBI

11. Fingertip peeling/exfoliation or recurrent cracking has been described in some patients. PMC

12. Adermatoglyphia (reduced or absent fingerprints) may be noticed during fingerprinting or close inspection. NFEDNCBI

13. Sparse axillary hair and sometimes early scalp hair loss have been reported. NFED

14. Eye discomfort from chronic tearing and eyelid inflammation can lead to light sensitivity and frequent eye care visits. NCBI

15. Psychosocial impact from visible differences (skin, hair, teeth, nails, hands/feet) may affect confidence and daily life; multidisciplinary care helps. NCBI

Diagnostic tests

A) Physical examination 

1. Full skin exam to look for dry, thin skin and characteristic freckling that increases with age and sun. This pattern supports ADULT over other TP63 syndromes. NCBI

2. Hair and eyelash/eyebrow exam to document sparseness or texture/light-color changes typical of TP63 conditions. NCBI

3. Nail exam for dysplasia (pitting, ridging, brittle nails) on fingers and toes. Findings guide the diagnosis and nail care. NCBI

4. Oral/dental exam by a dentist to count missing teeth, note cone-shaped teeth, and record early tooth loss; this informs treatment planning. NCBI

5. Hand/foot exam to check for syndactyly or split hand/foot features; careful documentation helps distinguish ADULT from overlapping TP63 syndromes. NCBI

B) Manual/office tests 

1. Schirmer test (tear-production strip) to confirm dry-eye contribution or reflex tearing imbalance from lacrimal obstruction; low wetting suggests tear issues.
2. Punctal probing and irrigation by an eye specialist to see whether the tear duct opening is present or blocked (common in ADULT). NCBI
3. Dermatoglyphic (fingerprint) assessment with ink or digital capture to document reduced or absent fingerprints (adermatoglyphia). NCBI
4. Minor’s starch–iodine sweat test (bedside mapping of sweating) to show reduced sweating patterns that match patient symptoms of heat intolerance.
5. Ocular surface staining and tear break-up time (fluorescein dye) to assess dry eye and eyelid inflammation from chronic tearing/blepharitis.

C) Laboratory & pathological tests

1. Molecular genetic testing of TP63 (sequencing ± deletion/duplication analysis). Finding a pathogenic TP63 variant confirms the diagnosis. NFEDNCBI
2. Targeted familial variant testing for relatives when a TP63 change is known in the family, to guide counseling and early care. NFED
3. Multigene ectodermal dysplasia panel (NGS-based) when the presentation overlaps other conditions; helps rule in/out different genes in the same pathway. NCBI
4. Skin biopsy (when needed) to look at ectodermal structures (e.g., eccrine units); results may be nonspecific but can support the clinical picture. PMC
5. Hair-shaft microscopy/trichogram to document structural hair changes that match patient complaints and guide supportive care.

D) Electrodiagnostic/physiologic sweat tests 

1. QSART (quantitative sudomotor axon reflex test) to measure the nerves and glands that control sweating; reduced responses align with heat intolerance in ADULT.
2. Sympathetic skin response (SSR) or galvanic skin response to provide another physiologic measure of sweat/skin autonomic function when needed.

E) Imaging tests 

1. Dental panoramic X-ray (orthopantomogram) to map missing and malformed teeth for orthodontic/prosthodontic planning.
2. Hand/foot X-rays to document bone changes behind syndactyly or split hand/foot and to plan any surgical care if required.
3. Lacrimal imaging (dacryocystography or radionuclide dacryoscintigraphy) when surgery is considered, to define where the tear pathway is blocked. (Eye-care teams choose based on local protocols.) NCBI

Non-pharmacological treatments

Physiotherapy & Rehabilitation

1. Hand therapy for dexterity. Purpose: improve grasp/pinch in split-hand/foot. Mechanism: task-specific practice, strengthening, sensory re-education. Benefits: better independence in daily tasks (writing, buttoning).

2. Custom splints/orthoses. Purpose: stabilize digits/arches, protect joints. Mechanism: external support redistributes force. Benefits: safer function, less pain, easier tool use.

3. Adaptive device training. Purpose: teach safe use of adapted cutlery, keyboards, sports grips. Mechanism: ergonomic matching of device to hand shape. Benefits: faster, safer activity.

4. Scar and edema management (post-op). Purpose: soften scars, control swelling. Mechanism: massage, compression, elevation. Benefits: improved motion, cosmesis.

5. Range-of-motion and stretching. Purpose: prevent stiffness around reconstructed digits. Mechanism: gentle, frequent mobilization. Benefits: maintains reach and grip span.

6. Strength training for intrinsic/extrinsic hand muscles. Purpose: better pinch/power. Mechanism: graded resistance drills. Benefits: greater endurance for school/work tasks.

7. Fine motor skill practice. Purpose: accuracy in writing/typing. Mechanism: repetitive precision tasks. Benefits: smoother school/work performance.

8. Gait and balance coaching (if foot involved). Purpose: stable walking. Mechanism: foot orthoses, balance drills. Benefits: confidence, fewer falls.

9. Energy-conservation strategies in heat. Purpose: avoid overheating with low sweating. Mechanism: pacing, cooling breaks. Benefits: safer outdoor activity.

10. Skin-care routines training. Purpose: reduce fissures/infections. Mechanism: daily emollients after bathing, gentle cleansers. Benefits: fewer flares.

11. Nail care education. Purpose: limit splitting/infection. Mechanism: protect nails, trim straight, avoid trauma. Benefits: less pain, better function.

12. Ocular surface protection techniques. Purpose: relieve dry eye. Mechanism: blink training, humidifier, wraparound glasses. Benefits: less irritation.

13. Oral-motor and chewing strategies with missing teeth. Purpose: safer chewing/swallow. Mechanism: texture modifications, bilateral chewing practice. Benefits: better nutrition.

14. Post-surgical home program. Purpose: carry gains from therapy to home. Mechanism: written daily plan with goals. Benefits: durable outcomes.

15. Vocational/occupational adaptations. Purpose: match tasks to abilities. Mechanism: workplace ergonomic assessment, tool modifications. Benefits: sustained employment and comfort.

Mind-Body & Psychosocial 

1. Cognitive-behavioral skills. Purpose: manage stress/self-image. Mechanism: reframe unhelpful thoughts; coping plans. Benefits: better mood, adherence.
2. Peer support groups (ectodermal dysplasia). Purpose: shared tips and emotional support. Mechanism: community knowledge. Benefits: resilience. NFED
3. Relaxation and breathing practice. Purpose: reduce itch–scratch cycle and pain. Mechanism: lowers sympathetic arousal. Benefits: calmer skin and sleep.
4. Social skills and self-advocacy coaching. Purpose: communicate needs at school/work. Mechanism: role-play and scripts. Benefits: fewer barriers.
5. Sleep hygiene. Purpose: healing and mood. Mechanism: regular schedule, cool bedroom for heat intolerance. Benefits: energy and focus.

“Gene-informed” and Educational Therapy 

1. Genetic counseling. Purpose: understand inheritance/risks. Mechanism: education on TP63, options for family planning. Benefits: informed decisions. NCBI
2. Dental education program. Purpose: protect enamel and plan restorations. Mechanism: fluoride use, sealants, hygiene skills. Benefits: fewer cavities, better chewing.
3. Eye-care education. Purpose: prevent infections. Mechanism: lid hygiene, warm compresses, tear-duct care instructions. Benefits: fewer flares. Frontiers
4. Skin protection education. Purpose: prevent dryness/fissures. Mechanism: emollient timing (within 3–5 minutes after bathing). Benefits: softer skin, fewer infections.
5. Heat-safety plan. Purpose: avoid overheating. Mechanism: cooling garments, hydration, scheduled shade breaks. Benefits: safe outdoor time. ectodermaldysplasia.ca

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Medicines

There is no drug that “cures” ADULT syndrome; medicines treat symptoms. Typical dosing varies by product and patient—use only under clinician guidance.

1. Ocular lubricating drops/gel – Class: tear substitutes. Purpose: relieve dry eye; Mechanism: surface moisture film; Side effects: brief blur/sting. VisualDx

2. Topical ophthalmic cyclosporine (e.g., 0.05–0.1%) – Class: calcineurin inhibitor. Purpose: increase tear production; Mechanism: reduces ocular surface inflammation; Side effects: burning. VisualDx

3. Topical ophthalmic antibiotics (during infections) – Class: antimicrobials. Purpose: treat dacryocystitis/conjunctivitis; Mechanism: kill bacteria; Side effects: local irritation; use only when prescribed. Frontiers

4. Systemic antibiotics for dacryocystitis – Class: oral antibiotics chosen by culture. Purpose: control infection pre/post tear-duct surgery; Risks: GI upset, allergy. Frontiers

5. Skin emollients (urea, ceramide creams) – Class: barrier moisturizers. Purpose: fix dryness; Mechanism: water-lock and keratolysis (urea); Side effects: mild sting on cracks. (Dermatology consensus.)

6. Topical corticosteroids (low-to-mid potency) – Class: anti-inflammatory. Purpose: short courses for inflamed eczematous patches; Risks: atrophy with overuse. (Dermatology standard.)

7. Topical calcineurin inhibitors (tacrolimus/pimecrolimus) – Class: steroid-sparing anti-inflammatories. Purpose: sensitive areas; Risks: transient burning. (Dermatology standard.)

8. Antihistamines (oral, nighttime) – Class: H1 blockers. Purpose: itch relief; Risks: sedation/dry mouth. (Dermatology standard.)

9. Antiseptic cleansers (chlorhexidine for skin folds if recurrent infection) – Class: antiseptic. Purpose: cut bacterial load; Risks: irritation if overused. (Dermatology standard.)

10. Fluoride varnish/gel – Class: topical fluoride. Purpose: strengthen enamel and prevent cavities in hypodontia; Risks: mild temporary taste issues. (Dental standard.)

11. Saliva substitutes – Class: artificial saliva. Purpose: dry mouth relief; Mechanism: lubricates; Risks: taste change. (Dental standard.)

12. Analgesics (acetaminophen/NSAIDs as appropriate) – Class: pain relievers. Purpose: post-procedure pain; Risks: liver or stomach/renal risks—use as directed. (General standard.)

13. Antifungals (topical/oral if nail or skin infection confirmed) – Class: antifungal. Purpose: infections on dystrophic nails/skin; Risks: local irritation or systemic monitoring. (Dermatology standard.)

14. Minoxidil topical (off-label for sparse scalp hair) – Class: vasodilator/hair growth promoter. Purpose: improve hair density; Risks: scalp irritation, unwanted hair—discuss with dermatologist. (General hair-loss practice.)

15. Photoprotection (broad-spectrum SPF, protective clothing) – “Medication” category for emphasis. Purpose: protect dry, freckled skin; Mechanism: blocks UV; Risks: rare irritation. (Dermatology standard.)

Note: Medication schedules and doses must be individualized; many above are supportive, not disease-modifying.

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Dietary molecular supplements

(Evidence ranges from moderate to limited; discuss with clinicians.)

1. Omega-3 fatty acids – Function: may help dry eye/skin barrier; Mechanism: anti-inflammatory lipid mediators. (Dry-eye evidence base, not ADULT-specific.)

2. Vitamin D – Function: supports skin immunity and bone/teeth health; Mechanism: nuclear receptor signaling in keratinocytes/osteoblasts.

3. Calcium – Function: dental/bone support when teeth are few/implants planned; Mechanism: mineral substrate for bone.

4. Biotin (B7) – Function: supports brittle nails; Evidence mixed; Mechanism: keratin infrastructure.

5. Zinc – Function: skin healing and immunity; Mechanism: enzyme cofactor.

6. Vitamin A (careful with dose) – Function: epithelial health; Mechanism: retinoid signaling; Toxic at high doses—use only if deficient.

7. Vitamin C – Function: collagen support; Mechanism: cofactor for hydroxylation; helps wound healing after surgeries.

8. Protein/collagen peptides – Function: wound healing, implant osseointegration support (general nutrition).

9. Probiotics (selected strains) – Function: may reduce skin inflammation in some eczema-like conditions; Evidence variable.

10. Xylitol lozenges/gum – Function: caries prevention with hyposalivation; Mechanism: reduces S. mutans adherence; not for pets/young children.

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Immunity booster / regenerative / stem-cell drugs

Important, honest note: There are currently no approved immune-booster, regenerative, or stem-cell drugs that treat or reverse ADULT syndrome or TP63 variants. Any such approach would be experimental and should occur only in a registered clinical trial with ethics oversight. The best “immune support” is vaccination as recommended, good nutrition, skin/eye hygiene, and prompt treatment of infections. For families interested in research, a clinical geneticist can help locate relevant trials. NCBI

To be safe and accurate, I will not invent unproven drug names or doses for this section. Instead, here are six evidence-based actions often mislabeled as “immune boosters,” with clear framing:

1. Age-appropriate vaccinations (influenza, COVID-19, etc.) – prevents infections that exploit dry skin/eyes.

2. Infection prevention protocols (hand hygiene, lid hygiene) – lowers bacterial load at skin/eyes.

3. Adequate sleep – supports immune function.

4. Balanced protein-rich diet – provides substrates for antibodies/wound healing.

5. Treat proven infections promptly (culture-guided antibiotics).

6. Enroll in clinical trials if available (future gene-targeted strategies may emerge around TP63 biology). NCBI

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Surgeries

1. Dacryocystorhinostomy (DCR). Why: bypass blocked tear duct to stop constant tearing/infections; creates new drainage path into nose. Frontiers

2. Canalicular reconstruction/probing with stenting. Why: open narrow/closed canaliculi and keep patent with a stent. Frontiers

3. Hand reconstruction for ectrodactyly. Why: improve pinch/grasp, align digits, enhance function and appearance. (Orthopedic/plastic standard.)

4. Foot reconstruction/orthopedic procedures. Why: stabilize walking and shoe wear, reduce pain. (Orthopedic standard.)

5. Dental implants/osseointegration; bridges/orthodontics. Why: restore chewing and speech where teeth are missing. (Dental standard.)

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Preventions

1. Daily skin moisturizers after bathing to prevent cracks.

2. Sun protection (SPF, clothing) to protect freckled/dry skin.

3. Lid hygiene/warm compresses to reduce eye infections. Frontiers

4. Early dental visits; fluoride and sealants to preserve remaining teeth.

5. Cool-environment planning to avoid overheating (limited sweat). ectodermaldysplasia.ca

6. Protective gloves/shoes to reduce skin/nail trauma.

7. Treat infections early; avoid self-treating severe eye infections.

8. Keep vaccinations up to date.

9. Use appropriate orthoses to protect joints and improve function.

10. Genetic counseling for family planning and cascade testing. NCBI

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When to see doctors (red flags)

• Constant eye tearing with redness/pus, fever, or eye pain. Frontiers

• Skin cracks with spreading redness, fever, or severe pain.

• Sudden swelling/pain in the inner corner of the eye (possible dacryocystitis). Frontiers

• Rapidly worsening hand/foot pain, loss of function, or new wounds.

• Dental pain, swelling, or trouble eating/weight loss.

• Heat stress signs: dizziness, confusion, very hot dry skin—emergency with limited sweating. ectodermaldysplasia.ca

• Any pregnancy planning or new positive test—see genetics/ob-gyn for counseling. NCBI

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Foods: what to eat and what to avoid

Eat more of:

1. Water and hydrating beverages (supports skin/eye moisture).

2. Fatty fish, flaxseed, walnuts (omega-3 for skin/eye comfort).

3. Lean proteins (wound healing; dental surgeries).

4. Dairy or fortified alternatives (calcium/vitamin D for bones/implants).

5. Colorful fruits/vegetables (vitamin C/A, antioxidants) for skin repair.

Eat/avoid smartly:

1. Limit ultra-processed sugary snacks and sodas (tooth decay risk).
2. Avoid very spicy/salty foods close to bedtime if they worsen eye irritation via nasal congestion.
3. Limit alcohol (dries mucosa/skin, impairs healing).
4. If dry mouth, avoid sticky candies; prefer xylitol gum/lozenges.
5. Discuss any supplement with your clinician to avoid overdosing vitamin A or interactions.

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FAQs

1. Is ADULT syndrome curable? No. Care reduces symptoms and improves function and quality of life. NCBI

2. How is it inherited? Usually autosomal dominant; sometimes a new (de novo) variant appears. NCBI

3. What gene is involved? TP63, which controls many steps in ectoderm and limb development. NCBI

4. How is it diagnosed? Clinical signs plus genetic testing that finds a pathogenic TP63 variant. NCBI

5. How common is it? Very rare; exact numbers are unknown. Orpha

6. Is intelligence affected? Usually normal; challenges are physical/functional. NCBI

7. Are eyes always involved? Tear-duct problems are common but vary; an eye doctor can evaluate. Frontiers

8. Does everyone have split hands/feet? No; limb findings vary across people and even within families. NCBI

9. What about teeth? Missing/small teeth are common; dental teams can plan implants or bridges. NCBI

10. Can skin be managed? Yes—daily moisturizers, gentle cleansers, and short courses of anti-inflammatory creams when needed.

11. Is overheating a risk? Yes if sweating is low; use cooling, shade, hydration, and plan activities. ectodermaldysplasia.ca

12. What surgeries help most? Tear-duct repair (DCR), hand/foot reconstruction, and dental implants, based on need. Frontiers

13. Are there gene or stem-cell treatments? Not yet for ADULT; follow clinical genetics for research options. NCBI

14. What specialists should be on my team? Clinical genetics, dermatology, ophthalmology, dentistry, hand/orthopedic surgery, rehabilitation, psychology. NCBI

15. Where can families find support? Ectodermal dysplasia foundations and patient groups share resources and lived experience. NFED

Disclaimer: Each person’s journey is unique, treatment plan, life style, food habit, hormonal condition, immune system, chronic disease condition, geological location, weather and previous medical  history is also unique. So always seek the best advice from a qualified medical professional or health care provider before trying any treatments to ensure to find out the best plan for you. This guide is for general information and educational purposes only. Regular check-ups and awareness can help to manage and prevent complications associated with these diseases conditions. If you or someone are suffering from this disease condition bookmark this website or share with someone who might find it useful! Boost your knowledge and stay ahead in your health journey. We always try to ensure that the content is regularly updated to reflect the latest medical research and treatment options. Thank you for giving your valuable time to read the article.

The article is written by Team RxHarun and reviewed by the Rx Editorial Board Members

Last Updated: September 09, 2025.