Swelling of the thyroid gland due to inflammation, producing a lump in the neck

A sexually-transmitted disease caused by a bacterium called Neisseria gonorrhoeae.

A rare autoimmune disorder affecting the kidney, the lungs or both

Gastro-oesophageal reflux disease (acid reflux). The regurgitation of acidic fluid from the stomach into the oesophagus.

A common metabolic disorder that causes attacks of arthritis, usually in a single joint. Gout is due to high levels of uric acid in the blood.

A condition sometimes seen after bone marrow transplantation or transfusion, where newly transplanted immune cells attack the recipient.

A benign growth formed of immune cells, usually produced in reponse to infection, inflammation or injury.

A sexually transmitted infection.

An autoimmune disorder characterised by an overactive and enlarged thyroid gland.

A chemical that stimulates new cell growth and maintenance in the body.

gamma glutamyl transpeptidase

A rare disorder in which nerves become inflammed when they are attacked by the body's immune system. It is believed to be an autoimmune reaction to infection, a vaccination or surgery. Tingling and weakness may spread to become widespread paralysis. Recovery is usual but may take months or years.

genito-urinary medicine

A granuloma usually found on the skin in the later stages of syphilis.

A type of psoriasis characterised by small, salmon-pink drop-like lesions that appear over the body, usually following a streptococcal throat infection.

An abbreviation for graft versus host disease, a condition sometimes seen after bone marrow transplantation or transfusion, where newly transplanted immune cells attack the recipient.

Helicobacter pylori - bacteria that can colonise the stomach under certain conditions and raise normal levels of acid.

A benign tumour or swelling of blood vessels, often appearing on the skin as a birthmark.

Bleeding into joint spaces.

A swelling caused by blood collecting in a body cavity.

A blood test that measures the percentage of the volume of whole blood that is made up of red blood cells.

A doctor who specialises in caring for people with disorders of the blood.

A collection of blood outside a blood vessel. It occurs when the wall of a blood vessel becomes damaged and blood leaks into surrounding tissue where it pools, such as in a bruise.

Blood in the urine.