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Small bowel atresia 

The intestines form early in pregnancy as a long straight tube. Before the tenth week of pregnancy, they develop into the separate organs making up the digestive system. Occasionally, the intestines are not completely connected or blocked (atresia). Sometimes there is a partial blockage (web) inside the intestine.

Steroid induced diabetes

Steroids are hormonal chemical messengers that are produced naturally in the body by the adrenal glands (which are just above each kidney) and by the reproductive organs. Man-made versions of these hormonal substances are used to treat a wide range of illnesses and medical conditions. 

Stevens-Johnson syndrome 

Stevens-Johnson syndrome is a rare condition arising from ‘over-reaction’ of the immune system to a trigger such as a mild infection or a medicine, leading to blistering and peeling of the skin and surfaces of the eyes, mouth and throat. It is named after the two doctors who described it in the early 20th century.

Sturge-Weber syndrome

A syndrome is a collection of signs that are often seen together. Sturge-Weber syndrome (SWS) is a condition affecting the skin, brain and eyes. It is named after the doctors who described it in the late 19th century and early 20th century.

Stye

A stye (hordoleum) is an inflamed area of the eyelid, either at the base of an eyelash (external hordoleum) or on the inside surface of the eyelid (internal hordoleum). Styes are more common in children than adults.

Subglottic stenosis

The subglottis is just below the vocal cords at the bottom of the voice box (larynx). It is the narrowest part of a child’s airway. Subglottic stenosis is a narrowing of the subglottic airway. Doctors do not know how many children are affected by subglottic stenosis, but we see around 200 children with the condition each year at Great Ormond Street Hospital (GOSH).

Supraventricular tachycardia

This page from Great Ormond StreetHospital (GOSH) explains about the different forms of supraventricular tachycardia – AV node re-entry tachycardia, atrial flutter, AV reciprocating tachycardia, atrial tachycardia and junctional tachycardia – their causes, symptoms and treatment and where to get help.