Lactose intolerance

Nausea and vomiting

Dyspepsia

Haematemesis

Colonoscopy and sigmoidoscopy

Cirrhosis of the liver

Prolonged diarrhoea in the adult

Primary sclerosing cholangitis

Clinical use of vitamins

Hereditary angioedema (HAE) and ACE inhibitor-induced angioedema

Gastro-oesophageal reflux disease

Functional bowel disorders and the irritable bowel syndrome (IBS)

Acute porphyria

Primary biliary cirrhosis

Ulcerative colitis

Groin pain

Gastroscopy

Reactive arthritis

Peptic ulcer disease, Helicobacter pylori infection and chronic gastritis

Chronic pancreatitis