Diverticulosis or diverticular disease of the colon is characterised by pouches in the lining of the large bowel which get blocked, causing inflammation.
Chronic pancreatitis refers to hardening and inflammation of the pancreas. It is associated with excessive alcohol consumption and causes abdominal pain.
Achalasia is a gastrointestinal disorder. The oesophagus valve tightens, preventing food from passing to the stomach. Achalasia treatment includes surgery.
Crohn's disease is a form of inflammatory bowel disease characterised by chronic inflammation of the gastrointestinal tract and symptoms like diarrhoea.