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breakthrough bleeding

Abnormal vaginal bleeding occurring between menstrual periods.

broad spectrum

Having a wide range of activity. For example, broad-spectrum antibiotics are effective against a wide range of bacteria.

bronchi

Any of the main air pipes beyond the windpipe, or trachea, which have cartilage in their wall.

bronchiectasis

A lung disorder in which the bronchi are abnormally widened and distorted and have damaged linings.

bronchiolitis

An acute viral infection of the lungs, mainly affecting babies and small children.

bronchitis

Acute inflammation of the air passages within the lungs

bronchoscopy

A type of endoscopy examination enabling a doctor to examine the airways through an instrument called a bronchoscope

brucellosis

A rare bacterial infection.

Bruit

An abnormal swishing or ringing sound in the ear caused by blood pulsing through the AVM.

bruxism

Grinding of the teeth.

BTB

An abbreviation for breakthrough bleeding.

bulimia nervosa

An illness that is chracterised by bouts of overeating usually followed by self-induced vomiting.

bullous impetigo

A skin infection that is generally caused by one of two specific bacteria. it usually affects pre-school and school-aged children, especially in the summer months.

bullous myringitis

An inflammatory condition of the eardrum, characterised by painful, fluid-filled blisters on the eardrum. It often arises as a secondary complication of a bacterial or viral infection.

bundle branch block

A block in the normal conduction of electrical activity in the heart.

bunion

A thickened pad of tissue or a fluid-filled sac (bursa) lying over a deformed big toe. It is caused by an abnormal outward projection of the big toe.

Burkitt's lymphoma

A cancer of the lymph tissues that is characterised by tumours within the jaw and/or abdomen.

bursitis

Inflammation of one or more of the small sacs of synovial fluid (bursae) under the skin, normally found over joints and between tendons and bones. They act as cushions between two surfaces that may rub against each other.

BV

bacterial vaginosis

BXO

balanitis xerotica obliterans

C-reactive protein

A protein found in the blood. Raised levels suggest tissue damage or necrosis (death of cells).

Caesarean scar

A scar left following an operation to deliver a baby from the uterus through a horizontal or, less commonly, a vertical incision in the abdomen.

cafe au lait spots

patches of coffee coloured skin that can occur anywhere on the body. They are usually oval in shape and may measure several centimetres across. A few spots are usually not significant but larger numbers may be.

calcaneus

The heel bone.