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Immune system conditions

Trypanosoma forms in blood smear from patient with African trypanosomiasis Nervous system

African trypanosomiasis (sleeping sickness)

Infectious · Chronic

A parasitic infection spread by tsetse flies in sub-Saharan Africa, which can invade the brain and is fatal without treatment.

10 min read
Allergic Conjunctivitis Immune system

Allergic conjunctivitis

Non-infectious · Acute or chronic

Inflammation of the clear lining of the eye caused by an allergic reaction, leading to itchy, red, watery eyes.

6 min read
Misc pollen colorized Immune system

Allergic rhinitis (hay fever)

Non-infectious · Chronic

An allergic reaction in the nose causing sneezing, a runny or blocked nose and itching, often triggered by pollen or dust mites.

6 min read
Allopecia areata Immune system

Alopecia areata

Non-infectious · Acute or chronic

An autoimmune condition in which the immune system attacks hair follicles, causing round patches of hair loss.

6 min read
A rash on the chest of a person with anaphylaxis Immune system

Anaphylaxis

Non-infectious · Acute

A severe, life-threatening allergic reaction that develops rapidly and needs immediate treatment with adrenaline.

5 min read
Angioedema: image from Wikimedia Commons Immune system

Angioedema

Non-infectious · Acute

Swelling deep under the skin, often around the eyes, lips, tongue or throat, caused by fluid leaking from small blood vessels.

5 min read
Spondylitis ankylosans (morbus bechterew) anagoria Musculoskeletal system

Ankylosing spondylitis

Non-infectious · Chronic

A long-term inflammatory arthritis that mainly affects the spine and pelvis, causing back pain and stiffness that improve with movement.

6 min read
Very high magnification micrograph of thrombotic microangiopathy , abbreviated TMA Blood (haematology)

Antiphospholipid syndrome

Non-infectious · Chronic

An autoimmune condition in which antibodies make the blood more likely to clot, causing thrombosis and pregnancy complications.

5 min read
Atopy of the flexure crease of the elbow 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.

5 min read
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.

5 min read
Very high magnification micrograph of autoimmune hepatitis 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.

5 min read
Blood (haematology)

Bacteraemia

Infectious · Acute

The presence of bacteria in the bloodstream, which can be harmless and brief or lead to serious infection and sepsis.

5 min read
Immune system

Behçet's disease

Non-infectious · Chronic

A rare, long-term inflammatory condition causing blood vessel inflammation, with mouth and genital ulcers, eye inflammation and skin problems.

5 min read
Endocrine system

Type 1 diabetes

Non-infectious · Chronic

An autoimmune condition where the body cannot make insulin.

1 min read
Digestive system

Typhoid fever

Infectious · Acute

A bacterial infection spread through contaminated food and water.

1 min read