Disease A-Z Library
Inferior Anastomotic Vein Stasis
Inferior Anastomotic Vein Stasis is a condition that affects blood flow in veins, leading to various symptoms and complications. In this comprehensive guide, we’ll break down...
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Rx Blood, Metabolism, and Infectious Diseases (A – Z)
Browse plain-English disease and condition guides, including symptoms, causes, diagnosis, treatment options, prevention, and when to seek medical care.
2,111 articlesUpdated medical education library
Diseases A-Z
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A
- Abdominal Pain- Causes, Symptoms, Diagnosis
- Abdominal Pain- Symptoms, Diagnosis
- Absolute Basopenia
- Absolute Basophilia
- Absolute Eosinopenia
- Absolute Lymphocytosis
- ACER3-Related Early Childhood-Onset Progressive Leukodystrophy
- Acquired Aplastic Anemia
- Acquired Basopenia
- Acquired Erythroblastopenia
- Acquired Haemoglobin H Disease
- Acquired Primary Erythrocytosis
- Acquired Ring Sideroblasts (ARS)
- Acquired Sideroblastic Anemia
- Acquired Torticollis; Causes, Symptoms, Diagnosis, Treatment
- Acute Leukemia of Ambiguous Lineage
- Acute Leukemia of Indeterminate Lineage
- Acute Lymphopenia
- Acute Motor Neuropathy, Causes, Symptoms, Treatment
- Acute or Transient Lymphocytosis
- Acute Whiplash Injury; Causes, Symptoms, Treatment
- Adhesive Capsulitis link Diabetes Neuropathy
- Adult-onset Diabetes
- Aerobic Actinomyces Infection (Better Called Aerobic Actinomycete Infection)
- African Iron Overload
- Agammaglobulinemia Non-Bruton Type
- Agranulocytosis
- ALG1 Congenital Disorder of Glycosylation (ALG1-CDG)
- ALG2 Congenital Disorder of Glycosylation (ALG2-CDG)
- ALG6–Congenital Disorder of Glycosylation (ALG6-CDG, CDG-Ic)
- ALG8-Congenital Disorder of Glycosylation (ALG8-CDG)
- Alkaline Ceramidase-3 (ACER3) Deficiency
- Alkaptonuria
- Alpha Thalassemia Intellectual Disability Syndrome
- Alpha Thalassemia Spectrum Disorders
- Alpha Thalassemia–X-linked Intellectual Disability Syndrome
- Alpha-2-Plasmin Inhibitor (α2-Antiplasmin) Deficiency
- Alpha-Methyl-Acetoacetyl-CoA Thiolase Deficiency
- Alpha-Methylacetoacetic Aciduria
- Alpha-Methylacetoacetic Aciduria
- Alpha-Sarcoglycan–Related Limb-Girdle Muscular Dystrophy R3
- Alpha-sarcoglycanopathy
- Alpha-Thalassemia Myelodysplasia Syndrome
- Alpha-Thalassemia–Intellectual Disability Syndrome Linked to Chromosome 16
- Alpha-Thalassemia–Intellectual Disability Syndromes
- Alpha-Thalassemia/Mental Retardation Syndrome (ATR-X Syndrome)
- American Mountain Fever
- Aminoacylase-1 Deficiency (ACY1 Deficiency)
- Amoebiasis due to Entamoeba Histolytica
- Amoebiasis Due to Free Living Amoebae
- Ancylostoma
- Ancylostoma Infectious Disease
- Anemia – Types, Causes, Symptoms, Diagnosis, Treatment
- Anemia of Chronic Diseases
- Angina Decubitus; Causes, Symptoms, Diagnosis, Treatment
- Angina Pectoris- Causes, Symptoms Diagnosis
- Angina Pectoris- Health Tips, Home Remedies
- Angina Pectoris- Symptoms, Diagnosis, Types
- Angina Pectoris- Types, Causes, Symptoms
- Angina Pectoris-Homeopathy Medicine
- Angina Pectoris-Treatment, Complication
- Angiostrongyliasis (Rat Lungworm Disease)
- ANO5-Related Limb-Girdle Muscular Dystrophy
- Anoctamin-5–Related Limb-Girdle Muscular Dystrophy R12 (LGMDR12)
- Anterior Cerebellar Artery Infarct
- Anterior Choroidal Artery
- Anterior Choroidal Artery Arteriosclerosis
- Anterior Choroidal Artery Atrophy
- Anterior Choroidal Artery Degeneration
- Anterior Choroidal Artery Disorders
- Anterior Choroidal Artery Dysfunction
- Anterior Choroidal Artery Embolism
- Anterior Choroidal Artery Fibrillation
- Anterior Choroidal Artery Insufficiency
- Anterior Choroidal Artery Lesions
- Anterior Choroidal Artery Malformations
- Anterior Choroidal Artery Obstruction
- Anterior Choroidal Artery Stasis
- Anterior Choroidal Artery Thrombophlebitis
- Anterior Choroidal Artery Thrombosis
- Anterior Circulation Atrophy
- Anterior Circulation Compression
- Anterior Circulation Diseases
- Anterior Circulation Disorders
- Anterior Circulation Dysfunction
- Anterior Circulation Embolism
- Anterior Circulation Fibrillation
- Anterior Circulation Insufficiency
- Anterior Circulation Lesions
- Anterior Circulation Malformation
- Anterior Circulation Obstruction
- Anterior Circulation Sclerosis
- Anterior Circulation Stasis
- Anterior Circulation Thrombophlebitis
- Anterior Circulation Thrombosis
- Anterior Circulation Tumors
- Anterior Communicating Artery Arteriosclerosis
- Anterior Communicating Artery Atherosclerosis
- Anterior Communicating Artery Atrophy
- Anterior Communicating Artery Degeneration
- Anterior Communicating Artery Diseases
- Anterior Communicating Artery Disorders
- Anterior Communicating Artery Dysfunction
- Anterior Communicating Artery Embolism
- Anterior Communicating Artery Fibrillation
- Anterior Communicating Artery Insufficiency
- Anterior Communicating Artery Lesions
- Anterior Communicating Artery Malformations
- Anterior Communicating Artery Obstruction
- Anterior Communicating Artery Stasis
- Anterior Communicating Artery Thrombophlebitis
- Anterior Communicating Artery Thrombosis
- Anterior Ethmoidal Artery Arteriosclerosis
- Anterior Ethmoidal Artery Atherosclerosis
- Anterior Ethmoidal Artery Atrophy
- Anterior Ethmoidal Artery Degeneration
- Anterior Ethmoidal Artery Diseases
- Anterior Ethmoidal Artery Disorders
- Anterior Ethmoidal Artery Dysfunction
- Anterior Ethmoidal Artery Embolism
- Anterior Ethmoidal Artery Fibrillation
- Anterior Ethmoidal Artery Insufficiency
- Anterior Ethmoidal Artery Lesions
- Anterior Ethmoidal Artery Malformations
- Anterior Ethmoidal Artery Obstruction
- Anterior Ethmoidal Artery Stasis
- Anterior Ethmoidal Artery Thrombophlebitis
- Anterior Ethmoidal Artery Thrombosis
- Anterior Inferior Cerebellar Artery (AICA) Atherosclerosis
- Anterior Inferior Cerebellar Artery (AICA) Diseases
- Anterior Inferior Cerebellar Artery (AICA) Embolism
- Anterior Inferior Cerebellar Artery (AICA) Fibrillation
- Anterior Inferior Cerebellar Artery (AICA) Infarction
- Anterior Inferior Cerebellar Artery (AICA) Insufficiency
- Anterior Inferior Cerebellar Artery (AICA) Malformations
- Anterior Inferior Cerebellar Artery (AICA) Obstruction
- Anterior Inferior Cerebellar Artery (AICA) Stroke
- Anterior Inferior Cerebellar Artery (AICA) Thrombosis
- Anterior Inferior Cerebellar Artery Arteriosclerosis
- Anterior Inferior Cerebellar Artery Arteriosclerosis
- Anterior Inferior Cerebellar Artery Atrophy
- Anterior Inferior Cerebellar Artery Degeneration
- Anterior Inferior Cerebellar Artery Disorders
- Anterior Inferior Cerebellar Artery Dysfunction
- Anterior Inferior Cerebellar Artery Lesions
- Anterior Inferior Cerebellar Artery Thrombophlebitis
- Anterior Temporal Artery Arteriosclerosis
- Anterior Temporal Artery Atherosclerosis
- Anterior Temporal Artery Atrophy
- Anterior Temporal Artery Degeneration
- Anterior Temporal Artery Diseases
- Anterior Temporal Artery Disorders
- Anterior Temporal Artery Dysfunction
- Anterior Temporal Artery Embolism
- Anterior Temporal Artery Fibrillation
- Anterior Temporal Artery Insufficiency
- Anterior Temporal Artery Lesions
- Anterior Temporal Artery Malformations
- Anterior Temporal Artery Obstruction
- Anterior Temporal Artery Stasis
- Anterior Temporal Artery Thrombophlebitis (ATAT)
- Anterior Temporal Artery Thrombosis
- Anti Neutrophil Cytoplasmic Antibody Associated Vasculitis (AAV)
- Anti-HLA Hyperimmunization
- Antoni’s Palsy – Causes, Symptoms, Diagnosis, Treatment
- Aplastic Anemia
- Aplastic Anemia
- Aplastic Marrow Failure
- Aplastic Pancytopenia
- Apparent Mineralocorticoid Excess
- Argentine Hemorrhagic Fever (AHF)
- Arginine Vasopressin Deficiency (AVP-D)
- Argininosuccinase Deficiency
- Argininosuccinate Lyase (ASL) Deficiency
- Argininosuccinic Acid Lyase Deficiency
- Argininosuccinic Aciduria (ASL Deficiency)
- Aromatase Deficiency (CYP19A1-Related Estrogen Biosynthesis Disorder)
- Aromatic L-amino Acid Decarboxylase (AADC) Deficiency
- Aspartoacylase Deficiency (Canavan Disease)
- Aspergillus Niger Infection
- Asplenia
- Asthma Symptoms Causes, Diagnosis, Types
- Astley-Kendall Dysplasia
- Atelosteogenesis Type I
- Atelosteogenesis Type III (AO3)
- Atransferrinemia
- ATTRV122I Amyloidosis
- ATTRV30M Amyloidosis
- Atypical Hemolytic-Uremic Syndrome
- Atypical Hypotonia-Cystinuria Syndrome
- Atypical Trigeminal Teuralgia; Causes, Symptoms
- Aural Myiasis
- Autoimmune Neutropenia (AIN)
- Autoimmune Pancytopenia
- Autoimmune Thrombocytopenia–Primary Immunodeficiency Syndrome
- Autoinflammatory Syndrome with Pyogenic Bacterial Infection and Amylopectinosis
- Autosomal Dominant Aplastic Anemia and Myelodysplasia
- Autosomal Dominant Hereditary Xerocytosis (ADHX)
- Autosomal Recessive Ataxia Due to CoQ10 Deficiency
- Autosomal Recessive Ataxia due to Ubiquinone (Coenzyme Q10) Deficiency
- Autosomal Recessive Axonal Charcot-Marie-Tooth Disease due to a Copper-Metabolism Defect
- Autosomal Recessive Cutis Laxa Type 2 Caused by PYCR1 Mutation
- Autosomal Recessive Cutis Laxa Type 2B (ARCL2B)
- Autosomal Recessive Distal Osteolysis Syndrome (ARDOS)
- Autosomal Recessive DOPA-Responsive Dystonia
- Autosomal Recessive Early-Onset Parkinson Disease 6 (PARK6, PINK1-Related Parkinson Disease)
- Autosomal Recessive Epidermolytic Ichthyosis (AREI)
- Autosomal Recessive Frontotemporal Pachygyria
- Autosomal Recessive Hereditary Hypophosphatemic Rickets (ARHR)
- Autosomal Recessive Hyperinsulinemic Hypoglycemia Due to SUR1 Deficiency
- Autosomal Recessive Hyperinsulinism Due to Kir6.2 Deficiency
- Autosomal Recessive Hypophosphatemic Vitamin-D-Refractory Rickets (ARHR)
- Autosomal Recessive Infantile Hypercalcemia (ARIH
- Autosomal Recessive Infantile Parkinsonism
- Autosomal Recessive Juvenile Parkinson Disease 2
- Autosomal Recessive Limb-Girdle Muscular Dystrophy Type 2E (LGMD2E)
- Autosomal Recessive Limb-Girdle Muscular Dystrophy Type 2N (LGMD2N)
- Autosomal Recessive Secondary Erythrocytosis, Non-Chuvash Type
- Autosomal Recessive Secondary Polycythemia not Associated with VHL (Von Hippel–Lindau)
- Autosomal Recessive Secondary Polycythemia, Non-Chuvash Type
- Autosomal Recessive Severe Congenital Neutropenia (SCN) due to C-X-C Motif Chemokine Receptor 2 (CXCR2) Deficiency
- Autosomal Recessive Severe Congenital Neutropenia (SCN) due to CXCR2 Deficiency
- Autosomal Recessive Severe Congenital Neutropenia (SCN) due to G6PC3 Deficiency
- Autosomal Recessive Severe Congenital Neutropenia due to Glucose-6-Phosphatase Catalytic Subunit 3 (G6PC3) Deficiency
- Autosomal Recessive Severe Congenital Neutropenia due to JAGN1 Deficiency
- Autosomal Recessive Sideroblastic Anemia (AR-CSA)
- Autosomal Recessive Spastic Paraplegia Type 59 (SPG59)
- Autosomal Recessive Spastic Paraplegia Type 60 (SPG60)
- Autosomal Recessive Spastic Paraplegia Type 66 (SPG66)
- Autosomal Recessive Spastic Paraplegia Type 67 (SPG67)
- Autosomal Recessive Spastic Paraplegia Type 69 (SPG69)
- Autosomal Recessive Spastic Paraplegia Type 70 (SPG70)
- Autosomal Recessive Spastic Paraplegia type 71 (SPG71)
- Autosomal Recessive Spastic Paraplegia Type 76 (SPG76)
- Autosomal Recessive Spinocerebellar Ataxia Type 9 (SCAR9)
- Autosomal Sideroblastic Anemia
B
- B‑cell Lymphocytopenia
- B‑cell Lymphocytosis
- B4GALT1-CDG (Beta-1,4- Galactosyltransferase 1 Deficiency)
- B4GALT1-Congenital Disorder of Glycosylation (B4GALT1-CDG)
- Babesiosis
- Baby Rattle Pelvis Dysplasia
- Bacterial Infectious Meningitis
- Bad Breath Causes Symptoms, Diagnosis, Treatment
- Bad breath Treatment, Health Tips 100% Sure
- Bad Breath; Types, Causes, Symptoms
- Bairnsdale Ulcer
- Balint Syndrome
- Banki Syndrome
- Bardet-Biedl Syndrome (BBS)
- Bardet-Biedl Syndrome 11 (BBS11)
- Bardet–Biedl Syndrome (BBS)
- Bardet–Biedl Syndrome (BBS) Caused by Mutation in the BBS5 Gene
- Baroreflex Failure
- Bartonellosis due to Bartonella Henselae Infection
- Basal Ganglia Calcification
- Basal Ganglia Degeneration with Calcification
- Basilar Artery Fenestration
- Basilar Artery Fenestration Atrophy
- Basilar Venous Plexus Strokes
- Basilar Venous Plexus Tumors
- Basopenia
- Behçet-Like Disease Due to A20 Haploinsufficiency (HA20)
- Berardinelli-Seip syndrome
- Bernard-Soulier Syndrome (BSS)
- Bernard–Soulier Syndrome
- Bernard–Soulier Thrombopathy (Bernard–Soulier Syndrome)
- Beta Thalassemia Syndrome
- Beta-1,4-Galactosyltransferase Deficiency (B4GALT1-CDG)
- Beta-Alanine Synthase Deficiency
- Beta-D-Mannosidosis
- Beta-Ketothiolase Deficiency
- Beta-Thalassemia–X-linked Thrombocytopenia Syndrome
- Beta-Ureidopropionase Deficiency
- BH4-Deficient Hyperphenylalaninemia A
- BH4-Deficient Hyperphenylalaninemia Type A
- Binge Type Anorexia Nervosa, Causes, Treatment
- Biotin- or Thiamine-Responsive Encephalopathy Type 2
- Biotinidase Deficiency
- Bird-Headed Dwarfism, Montreal Type
- Birk-Barel Intellectual Disability Dysmorphism Syndrome
- Birk-Barel Type Intellectual Disability
- Blastic NK-Cell Leukemia/Lymphoma
- Blastogenesis Defect (Impaired Lymphocyte Proliferation)
- Bleeding Diathesis due to Thromboxane Synthesis Deficiency.
- Blomstrand Lethal Chondrodysplasia
- Blood Loss Anemia
- Bloom Syndrome
- Body Skin Hyperlaxity due to Vitamin K-Dependent Coagulation Factor Deficiency
- Bolivian Hemorrhagic Fever (BHF)
- Bone Marrow Disorders
- Bone Marrow Failure Syndromes
- Bone Marrow Suppression (Myelosuppression)
- Botulism
Featured articles
Disease A-Z Library
15,000 White Blood Cell (WBC) Count Meaning
A white blood cell count measures the number of leukocytes circulating in one microliter of blood. Under normal conditions, adults have roughly 4,000–11,000 cells/µL. When the count...
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18,000 White Blood Cell (WBC) Count
A white blood cell count measures the number of leukocytes—cells that help your body fight infections and other diseases—in each microliter (µL) of blood. The normal...
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2-Methyl-3-Hydroxybutyricacidemia
2-methyl-3-hydroxybutyricacidemia is a rare inherited metabolic disease. Your body cannot properly break down the amino acid isoleucine and cannot use ketone bodies well. Ketone bodies are...
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3-Methyl-3-Hydroxybutyric Acidemia
3-methyl-3-hydroxybutyric acidemia (the condition most newborn-screening programs and medical references call 2-methyl-3-hydroxybutyric acidemia, or HSD10 disease / MHBD deficiency). It’s a very rare, inherited problem with...
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6-Pyruvoyl-Tetrahydropterin Synthase (PTPS) Deficiency
6-Pyruvoyl-Tetrahydropterin Synthase (PTPS) Deficiency is a rare, inherited metabolic disorder. It belongs to a small group of conditions called tetrahydrobiopterin (BH4) deficiencies. BH4 is a natural...
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Abdominal Pain- Causes, Symptoms, Diagnosis
Abdominal Pain- Causes, Symptoms, Diagnosis is also known as stomach pain or tummy ache, is a common symptom associated with non-serious and serious causes. Common causes of pain in the abdomen...
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Abdominal Pain- Symptoms, Diagnosis
Abdominal Pain- Symptoms, Diagnosis is also known as stomach pain or tummy ache, is a common symptom associated with non-serious and serious causes. Common causes of pain in the abdomen include...
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Absolute Basopenia
Absolute basopenia is a rare hematologic finding characterized by a near‐total absence of basophils—one of the five types of white blood cells that help orchestrate immune...
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Absolute Basophilia
Basophils are a small type of white blood cell made in your bone marrow. They circulate in the blood and carry tiny packets of chemicals such...
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Absolute Eosinopenia
Absolute eosinopenia is a hematological finding characterized by a virtual absence of eosinophils in the peripheral blood. Clinically, it is often defined as an absolute eosinophil...
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Absolute Lymphocytosis
Absolute lymphocytosis occurs when the number of lymphocytes in the blood rises above normal. Lymphocytes are a type of white blood cell that help your body...
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Disease A-Z Library
Clonal (Primary) Monocytosis
Clonal (primary) monocytosis means a person has too many monocytes in the blood because of a blood-forming stem cell clone—a group of bone-marrow cells carrying acquired...
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What “Severe High Monocytes” Means
Severe high monocyte counts—known as monocytosis—refer to a persistently elevated level of monocytes (a type of white blood cell) in the bloodstream, typically exceeding 1,000 cells/µL...
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Moderate High Monocytes Than Normal
Monocytes are one type of white blood cell. They patrol your blood, then move into tissues to become macrophages and dendritic cells, where they help clean...
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Mild Higher Monocytes Than Normal (Mild Monocytosis)
Monocytes are a kind of white blood cell that patrols the blood, then moves into tissues to become macrophages or dendritic cells—cells that help clean up...
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High Monocytes
Monocytes are a type of white blood cell made in your bone marrow. They circulate in the blood for about one to three days, then move...
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Selective B‑Cell Lymphopenia
Selective B‑cell lymphopenia means the number of B lymphocytes (B cells) in the blood is lower than normal, while other white blood cell types (like many...
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Chronic Lymphopenia
Lymphopenia means your blood has fewer lymphocytes than normal. Lymphocytes are white blood cells that run your immune system—mainly T cells, B cells, and NK (natural...
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Acute Lymphopenia
Acute lymphopenia means your lymphocyte count drops suddenly below the normal range, usually because of a short‑term illness, drug effect, or stress response. In adults, a...
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Lymphopenia
Lymphopenia means your blood has too few lymphocytes, which are the white blood cells that run much of your immune system. The main lymphocyte types are...
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Persistent (Long‑Term) Lymphocytopenia
Lymphocytopenia (also called lymphopenia) means your blood has too few lymphocytes, the white blood cells that drive immune defense (T cells, B cells, and natural killer...
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Transient (Short‑Term) Lymphocytopenia
Transient lymphocytopenia is a temporary drop in the number of lymphocytes—key white blood cells that help fight infections—in your bloodstream. Clinically, it’s defined as a lymphocyte...
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Secondary (Acquired) Lymphocytopenia
Secondary (acquired) lymphocytopenia is a condition in which the number of lymphocytes—white blood cells essential for adaptive immunity—falls below normal levels (<1.0 × 10⁹/L in adults) due to...
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Primary (Inherited) Lymphocytopenia
Primary (inherited) lymphocytopenia means a person is born with a genetic change that leads to too few lymphocytes—the white blood cells (T cells, B cells, and...
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NK‑cell Lymphocytopenia
Natural killer (NK) cells are a type of white blood cell that patrols the body, identifying and destroying virus‑infected cells and tumor cells. When NK cells...
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B‑cell Lymphocytopenia
B‑cell lymphocytopenia means the number of B lymphocytes (B cells) in the blood is lower than normal for a person’s age. B cells are a type...
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T‑cell Lymphocytopenia
T‑cell lymphocytopenia means the body has too few T lymphocytes (T cells) in the blood. T cells are white blood cells that coordinate the immune system...
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Physiologic Lymphocytopenia
Lymphocytopenia (also called lymphopenia) means a lower‑than‑normal number of lymphocytes in the blood. Lymphocytes are white blood cells that power your immune system—mainly T cells, B...
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Physiologic Lymphocytopenia
Physiologic lymphocytopenia is a normal, transient drop in circulating lymphocyte counts that occurs in healthy individuals under non‑pathologic conditions. Unlike disease‑related lymphocytopenia, this form arises from...
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Production / Destruction-Dominant Lymphocytopenia
Production‑dominant lymphocytopenia occurs when the bone marrow cannot produce enough lymphocytes. Lymphocytes are white blood cells vital for fighting infections. In this form, factors such as...
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Dilutional Lymphocytopenia
Dilutional lymphocytopenia is a specific form of lymphopenia (also called lymphocytopenia) in which the absolute number of lymphocytes in the blood is lowered not by destruction...
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