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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.

Symbrachydactyly

Symbrachydactyly is a congenital (present at birth) hand anomaly, which affects a single upper limb. It is not inherited. It is characterised by short, stiff, webbed or missing fingers. The underlying muscles, tendons, ligaments and bones are all affected.

Syndactyly

Syndactyly means 'joined digits' and may involve webbing of the skin, or include fusion of the underlying bones. This may be along part or the whole length of the finger. It is the second most common congenital hand problem and occurs in around 1 in 1,000 births.

Talipes

You may have heard of club foot – a deformity of the foot and ankle. The medical name for club foot is talipes equinovarus (TEV), although many people shorten it to 'talipes'.