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diabetic ketoacidosis

Condition mainly found in type 1 diabetes, in which high levels of ketones are present; these are acidic compounds produced by fat breakdown.

diagnosis

The process of determining which condition a patient may have.

diaphragm

The strong muscular sheet separating the chest and abdominal cavities

diarrhoea

When bowel evacuation happens more often than usual, or where the faeces are abnormally liquid.

DIC

An abbreviation for disseminated intravascular coagulation.

DIDMOAD syndrome

A rare inherited genetic disorder featuring diabetes insipidus, diabetes mellitus, optic atrophy and deafness.

dietetics

The science of nutrition.

diethylstilbestrol

Synthetic female sex hormone sometimes abbreviated to DES.

dietitian

A specialist in food and nutrition.

differentiate

The specialisation of cells or tissues for a specific function.

differentiation

The process by which cells or tissues become specialised for a specific function.

digoxin

A drug used to treat heart failure or rhythm disorders.

diphtheria

A severe respiratory infection due to a bacterium that can cause difficulty breathing and swallowing as well as inflammation of the heart and nervous system

diplococci

Any of several round-shaped bacteria that occur in pairs.

diplopia

Double vision.

dissecting aortic aneurysm

Tearing of the inner lining of the aortic wall.

disseminated intravascular coagulation

A serious disorder in which the proteins that control blood clotting become abnormally active. this causes small blood clots to develop throughot the bloodstream, blocking small blood vessels.

dissociative disorders

A set of psychiatric conditions in which there is a split or dissociation from the self or surroundings - the person 'steps outside' their personal identity, usually in response to severe physical or mental trauma. Symptoms may range from amnesia to multiple personalities.

distal colitis

Type of ulcerative colitis that affects only the left side of the large intestine.

diuresis

Increased production and excretion of urine, for example due to a drug effect or simply to drinking more fluid than usual.

diuretic drugs

Drugs that help to remove excess water from the body.

diuretics

Drugs that help to remove excess water from the body by increasing the amount lost in urine.

diverticula

Small pouches that protrude from the wall of hollow organs such as the colon.They are very common and are thought to be caused by pressure forcing the lining of the organ through areas of weakness in the wall. They are associated with aging.

diverticular disease

The presence of small protruding sacs called ‘diverticula’ in the wall of the intestines and the symptoms caused by them.