Disorder - Urticaria pigmentosa

Organ Systems Involved
Integument

Presenting Signs

Cats with urticaria pigmentosa present with multiple, partly symmetrical areas of redness or brown discolouration of their skin. These areas can be intensely itchy and are often located on the trunk, limbs, head and neck. Occasionally the discoloured patches have crusted red papules (bumps). The patches can be darker brown in colour with some crusting on the surface of the skin. These symptoms are due to an increased number of mast cells, a type of cell involved in allergic reactions. These cells release hystamine, a substance that causes itchiness and inflammation in the area. Cats typically show these symptoms when they are young, with the age ranging from five to seven months old.

Cats at Risk

Sphynx cats

Breeds Affected
Sphynx


Treatment

Medical: treatment of symptoms is possible, with medications prescribed to decrease the itchiness of the lesions. Medication may include anti-histamines and anti-inflammatories, which are given by mouth. Other options may include a drug that suppresses the immune response to inflammation. Regular bathing with an oatmeal shampoo may help to ease the symptoms.

PubMed References
Urticaria pigmentosa

Contributor
Prue Bellamy