Skin (integumentary system)
Athlete's foot (tinea pedis)
Infectious · Acute
A common fungal infection of the skin of the feet, causing itchy, scaly or cracked skin, often between the toes.
GeoMed · Disease encyclopedia
Disease encyclopedia
Causes, symptoms, diagnosis, treatment approaches and prevention for common conditions. Browse A–Z, by body system, or search.
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Disease encyclopedia
Skin (integumentary system)
Immune system
Atopic dermatitis (eczema)
Non-infectious · Chronic
A common long-term skin condition causing dry, itchy, inflamed skin that comes and goes in flare-ups.
Cardiovascular system
Atrial fibrillation
Non-infectious · Chronic
A common heart rhythm disorder in which the upper chambers beat irregularly and often fast, increasing the risk of stroke.
Cardiovascular system
Atrial flutter
Non-infectious · Acute or chronic
A heart rhythm disorder in which the upper chambers beat very fast in a regular circuit, often causing a fast heartbeat.
Cardiovascular system
Atrial septal defect
Non-infectious · Chronic
A hole in the wall between the upper chambers of the heart, present from birth, which may not be found until adulthood.
Nervous system
Attention deficit hyperactivity disorder (ADHD)
Non-infectious · Chronic
A neurodevelopmental condition causing ongoing difficulties with attention, hyperactivity and impulsivity that affect daily life.
Nervous system
Autism spectrum disorder
Non-infectious · Chronic
A lifelong neurodevelopmental difference affecting social communication and interaction, with focused interests and repetitive behaviours.
Blood (haematology)
Autoimmune haemolytic anaemia
Non-infectious · Acute or chronic
A condition in which the immune system makes antibodies that destroy the body's own red blood cells, causing anaemia.
Digestive system
Autoimmune hepatitis
Non-infectious · Chronic
A long-term liver disease in which the immune system attacks liver cells, causing inflammation that can lead to cirrhosis if untreated.
Nervous system
Autonomic neuropathy
Non-infectious · Chronic
Damage to the nerves that control automatic body functions such as blood pressure, heart rate, digestion, bladder and sweating.
Musculoskeletal system
Avascular necrosis
Non-infectious · Chronic
Death of bone tissue caused by loss of blood supply, most often affecting the hip, which can lead to bone collapse and arthritis.
Digestive system
Avoidant restrictive food intake disorder (ARFID)
Non-infectious · Chronic
An eating disorder in which a person avoids or restricts food because of sensory sensitivity, fear of choking or vomiting, or low interest in eating, not because of body image.