Pigmented purpuric dermatoses (PPD)

Skin diseases severely impact quality of life and management of the condition can be exceptionally challenging, particularly when first and second-line treatments have failed. This chapter is written specifically with the focus on the management aspect of pigmented purpuric dermatoses, providing the dermatology trainees and junior doctors with the essential information and the different treatment options available to manage patients with this condition. History should screen for possible drug causes, which include acetaminophen, aspirin, chlordiazepoxide, thiamine, hydralazine, although often no cause is ever identified. The evidence-base for treatment recommendations is largely derived from case series/reports. Subtypes of PPD include: Eczematoid-like purpura of Doucas and Kapetankis, Granulomatous variant, itching purpura of Loewenthal, lichen aureus, linear PPD, pigmented purpuric lichenoid dermatosis of Gougerot and Blum, purpura annularis telangiectaticum, Schamberg's disease, and transitory PPD.