Evidence-Based Medical Encyclopedia
Explore thousands of diseases with authoritative clinical information from WHO, CDC, NIH, and international medical guidelines. Every condition features an interactive journey from diagnosis to treatment.
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Featured Conditions
Achalasia
Achalasia is an esophageal motility disorder caused by nerve degeneration, resulting in failure of the lower esophageal sphincter to relax and progressive difficulty swallowing.
Acromegaly
Acromegaly is a hormonal disorder caused by a pituitary tumor producing too much growth hormone, leading to enlarged hands, feet, and facial features.
Acute Coronary Syndrome
Acute Coronary Syndrome is a heart attack or severe angina caused by a sudden blockage in a coronary artery, cutting off blood and oxygen to the heart muscle.
Acne Vulgaris
Acne vulgaris is a common inflammatory skin condition caused by blocked hair follicles and oil glands, leading to pimples, blackheads, and cysts.
Acute Lymphoblastic Leukemia
A rapid-onset blood cancer where immature white blood cells (lymphoblasts) multiply uncontrollably in the bone marrow, crowding out healthy cells.
Acute Kidney Injury
Acute Kidney Injury is a sudden loss of kidney function, often due to decreased blood flow, toxins, or blockages, leading to a dangerous buildup of waste and fluids.
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Fibromyalgia
A chronic disorder causing widespread body pain, severe fatigue, and brain fog, stemming from how the brain processes pain.
Achalasia
Achalasia is an esophageal motility disorder caused by nerve degeneration, resulting in failure of the lower esophageal sphincter to relax and progressive difficulty swallowing.
Autosomal Dominant Polycystic Kidney Disease
A genetic disease where hundreds of large cysts grow inside the kidneys, destroying their ability to filter blood and causing massively enlarged kidneys, high blood pressure, and kidney failure.
Liver Cirrhosis
Extensive scarring of the liver caused by long-term damage, leading to liver failure, portal hypertension, and severe systemic complications.
Cushing Syndrome
A hormonal disorder caused by prolonged exposure to inappropriately high levels of cortisol.
Chronic Kidney Disease
Irreversible, progressive decline in kidney function occurring over months to years.
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Cluster Headaches
Extremely severe, unilateral headaches occurring in daily bouts, accompanied by eye tearing and nasal congestion, often driving the patient to physical agitation.
Schizophrenia
A chronic, severe mental disorder characterized by hallucinations, delusions, disorganized thinking, and emotional flattening, causing severe functional impairment.
Alopecia Areata
Alopecia areata is an autoimmune condition where the body's immune system attacks its own hair follicles, causing sudden, unpredictable patches of hair loss.
Cervical Cancer
A highly preventable cancer of the lower uterus caused by HPV, characterized by abnormal bleeding, and treated with surgery or radiation.
Pneumothorax
Air trapped in the chest cavity outside the lung, causing the lung to partially or completely collapse, resulting in sudden chest pain and breathlessness.
Bipolar Disorder
A lifelong mood disorder marked by severe highs (mania) and lows (depression), treated primarily with mood stabilizers like Lithium or Valproate.
Pityriasis Rosea
A common, harmless, self-resolving rash that starts with a single large 'herald patch' followed by a 'Christmas tree' pattern of smaller spots on the torso.
Dermatomyositis
An autoimmune disease causing progressive muscle weakness and distinct skin rashes, often linked to an underlying cancer in adults.
Hirschsprung Disease
A birth defect where missing nerve cells in the distal colon cause functional bowel obstruction, preventing newborns from passing meconium.
Myasthenia Gravis
An autoimmune neuromuscular disorder causing fluctuating weakness of skeletal muscles, often starting with drooping eyelids and double vision.
Hypoparathyroidism
A condition of deficient parathyroid hormone resulting in low blood calcium levels and high phosphorus levels.
Measles
A very contagious viral illness causing high fever, the "3 Cs" (cough, coryza, conjunctivitis), and a spreading red rash, preventable by the MMR vaccine.