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gestational

Relating to pregnancy.

gestational diabetes

Any level of glucose intolerance first detected during pregnancy.

GF

glandular fever

GI

gastrointestinal

giant cell arteritis

An inflammatory disease of blood vessels.

giardiasis

an infection of the digestive system caused by tiny parasites called giardia intestinalis.

Gilbert's syndrome

A usually harmless condition caused by a reduced amount of the chemical in the body used by the liver to process bilirubin.

gingivitis

Inflammation of the gums.

gingivostomatitis

Gingivitis and stomatitis together, usually due to a herpes virus infection of the mouth.

gland

An organ with the ability to make and secrete certain fluids.

glandular fever

A contagious disease caused by the Epstein-Barr virus, also known as infectious mononucleosis, characterised by a high temperature, sore throat and swollen lymph nodes.

glaucoma

Increased pressure within the eye (intraocular pressure), which leads to visual loss.

Gleason

A system used to assess the extent of abnormality of prostate cancer cells.

glomerulonephritis

Inflammation of the kidneys affecting the glomeruli, the blood-filtering units of the kidney.

glomus jugulae tumour

A rare, slow-growing tumour of the temporal bone in the skull.

glossitis

Inflammation of the tongue

glucagon

A hormone produced by the pancreas that broadly opposes the actions of insulin and so increases the blood sugar (glucose) level.

glucose

A simple sugar that is an important source of energy in the body.

glucose tolerance

The ability of the body to maintain a normal glucose level following the ingestion of glucose.

glue ear

Accumulation of fluid in the cavity of the middle ear.

glycated haemoglobin

HbA1c, a measure of how well glucose levels have been controlled over the previous three months or so in a person with diabetes. It is expressed as a percentage.

glycoprotein IIb/IIIa inhibitor

A group of medications that reduce platelet aggregation and so reduce clotting.

glycosuria

Abnormally high levels of glucose in the urine.

GnRH

gonadotrophin-releasing hormone