Your condition

Want to find out about your condition and how it's treated at Great Ormond Street Hospital? Enter a keyword in the box below and we'll search for it on our website.


A chalazion is a cyst (swollen area of tissue filled with fluid) that develops on the eyelid. The cyst is not usually painful, but can take a while to go down. Only very large chalazions can affect vision, by pressing on the eye.

CHARGE syndrome

CHARGE syndrome is a condition where a number of symptoms are seen together – the name CHARGE is made from the initials of the main symptoms of the condition. CHARGE syndrome is a rare condition affecting around one in every 10,000 births. It can also be called CHARGE association, because of the group of symptoms associated with each other, but this term tends not to be used these days.

Choanal atresia

Choanal atresia is a rare condition that is present from birth, in which the nasal passages are blocked by bone or tissue. This condition can affect one or both nasal passages. This page explains about choanal atresia and what to expect when your child comes to Great Ormond Street Hospital (GOSH) for treatment.


A cholesteatoma is an abnormal skin cell growth found in the middle ear, behind the ear drum. It can cause a smelly discharge from the ear, hearing loss and tinnitus (ringing in the ear). 

Chronic pain

The term ‘chronic pain’ includes a variety of pain syndromes that describe pain that has persisted beyond the expected period of recovery, for example, complex regional pain syndrome (CRPS), musculoskeletal pain, and persistent post-operative pain.

Chronic renal failure

Chronic renal failure (CRF) is a term used when the kidneys are not working as well as they should. The term implies that both kidneys are affected. This is because one normal kidney is enough to maintain normal kidney function throughout life.


This information from Great Ormond Street Hospital (GOSH) is on chylothorax – a condition where fluid called chyle builds up in the pleural space. Chyle is a milky fluid that is made when the body digests fat.