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Pleural effusion 

This information from Great Ormond Street Hospital (GOSH) is about pleural effusion. Pleural effusion refers to a build up of fluid in the pleural space, which causes the lung on the affected side to collapse and be unable to inflate.

Pneumothorax 

This information from Great Ormond Street Hospital (GOSH) is about pneumothorax. A pneumothorax refers to a build-up of air in the pleural space, which causes the lung on the affected side to collapse and be unable to inflate.

Polio

Polio is an infectious disease caused by any one of the three types of polio virus. In the UK, immunisation is automatically offered to everyone as a baby.

Polyarteritis nodosa

This page explains about polyarteritis nodosa (PAN), what causes it and how it can be treated. It also gives details of what to expect when your child comes to Great Ormond Street Hospital (GOSH) for assessment and treatment.

Port wine stains

A port wine stain is a vascular birthmark caused by abnormal development of blood vessels in the skin. A port wine stain is sometimes referred to as a capillary malformation. This page explains about port wine stains and what to expect when your child comes to Great Ormond Street Hospital for treatment.

Positional plagiocephaly

Plagiocephaly is a disorder that affects the skull, making the back or side of a baby’s head appear flattened. It is sometimes called deformational plagiocephaly. This pageexplains positional plagiocephaly and what to expect when your child comes to Great Ormond Street Hospital for treatment.

Proteus syndrome

Proteus syndrome is a medical condition that leads to disproportionate growth of tissues such as bone, skin, vascular and fatty tissue. This page from Great Ormond Street Hospital (GOSH) explains the causes, symptoms and treatment of Proteus syndrome and where to get help. 

Protruding eyes

Protruding eyes occur when the tissue behind the eyeball swells, pushing it forwards and exposing more of the white. It is also known as exophthalmos (when both eyes are protruding) or proptosis which can be bilateral (both eyes) or unilateral (one eye).

Psoriasis

Psoriasis is a relatively common skin condition affecting around two per cent of the UK population. It causes thickened flat plaques or patches of skin that are red, crusty, itchy and flaky. This information sheet from Great Ormond Street Hospital (GOSH) explains the causes, symptoms and treatment of psoriasis and where to get help.