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Patient Information Leaflets (PILs)

These Patient Information Leaflets (PILs) are specially written by the British Association of Dermatologists (BAD).

The BAD has been awarded The Information Standard certification for the process it employs to develop information products aimed at the general public, which include PILs, Sun Awareness Campaign materials, and other information products.

The BAD shall hold responsibility for the accuracy of the information published, and neither the scheme operator nor the scheme owner shall have any responsibility for costs, losses, or direct or indirect damages or costs arising from inaccuracy of information or omissions in information published on the website on behalf of the BAD.

Please note:

  1. There are thousands of different skin complaints, therefore, the focus of the British Association of Dermatologists' PILs production is on the most common, rarest or debilitating skin conditions.
  2. The offer to provide details of source materials used to inform the British Association of Dermatologists' PILs is for instances where the advice provided in the PILs does not reflect local practice and therefore evidence supporting said advice needs to be produced. It is not an offer to conduct literature searches or supply bibilographic materials for your own research.

For the latest BAD advice on Covid-19 for patients, please check the News and Media section of the website. Find this here. Our information for healthcare professionals is here.

Urticaria pigmentosa

Urticaria pigmentosa is the commonest type of a group of diseases called cutaneous mastocytosis, which has 3 other different types (see ‘What are the symptoms of urticaria pigmentosa?’ section).

Mastocytosis means increased number of mast cells. Mast cells are a type of blood cell belonging to our immune system, which secrete histamine if triggered. They can exist in the blood vessels or in any body tissue or organ.  Urticaria pigmentosa is composed of pigmented brown patches, made of collections of mast cells that swell when rubbed similar to urticaria. In the majority of cases, urticaria pigmentosa is a harmless condition with excellent outcome.

More than 75% of cases of urticaria pigmentosa happen to infants and children less than 10 years old, but it can also affect older children and adults. It affects both sexes equally and occurs in all races equally. 

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