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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.

Tinnitus

Tinnitus can be described as ‘the feeling of hearing noises when noise is not present’. It can also be described as ‘ringing in the ears’, although some people hear a buzzing or humming noise rather than ringing.

Tonsillitis

The tonsils are areas of tissue on both sides of the throat, at the back of the mouth. Children's tonsils help them to build up immunity and fight infection. In many children, the tonsils become repeatedly infected with bacteria and viruses, which make them swell and become painful. This is called tonsillitis.