Last updated: Friday, 24, December, 2010
Clinical assessment; FBC, blood film, platelet count.
Further investigation is unlikely to be productive unless there are clinical features suggestive of vasculitis or there is a personal or family history suggestive of a bleeding disorder.
The bleeding time and Hess test are neither sensitive nor specific and are not appropriate.
|Usually seen in older, fair skinned patients who have had prolonged solar exposure, with purpura typically on the forearms and dorsa of hands.|
Porphyria cutanea tarda
Not a true form of purpura but may sometimes be confused with it. The lesions are typical blistering and heal with scarring.