Search Medical Conditions

Search medical conditions A-Z 


Craniosynostosis is quite a rare condition that affects how the bones in the skull grow. ‘Cranio’ means head; ‘synostosis’ means fusion. There are different types of craniosynostosis. They all affect the shape of the head.


Croup is a common childhood condition that affects the upper part of the respiratory system – the trachea (windpipe), bronchi and larynx (voice box). It causes noisy breathing, a barking cough and sometimes a hoarse voice.

Crouzon syndrome

Crouzon syndrome is the most common type of complex craniosynostosis. It is named after the doctor who first described it in the early 20th Century. This page from Great Ormond Street Hospital (GOSH) explains the causes, symptoms and treatment of Crouzon syndrome and where to get help.

Cutaneous mastocytosis

Cutaneous mastocytosis is a condition characterised by increased numbers of mast cells in the skin. Mast cells are part of the immune system.This page from Great Ormond Street Hospital (GOSH) explains the causes, symptoms and treatment of cutaneous mastocytosis and where to get help.

Cutis aplasia

Cutis aplasia means ‘missing skin’ and is a congenital (present at birth) condition where a section of skin, usually on the scalp, is missing. This page explains the condition called cutis aplasia, what causes it and how it can be treated. It also outlines what you can expect when a child comes to Great Ormond Street Hospital (GOSH) for assessment and treatment.

Cystic fibrosis

This information from Great Ormond Street Hospital is about cystic fibrosis (CF) – an inherited disease primarily affecting the lungs and digestive system. It happens because the gene that is responsible for making mucus is faulty. Normally, the mucus that lines our internal organs is clear, lubricating and protects against infection. In babies with CF, it is thick, congesting and prone to infection.