Palpable purpura

Palpable purpura
Palpable purpura
	Cutaneous small-vessel vasculitis with palpable purpura and necrotic lesions.

Palpable purpura is characterized by firm, elevated hemorrhagic plaques or papules that can measure several centimeters in diameter. These are typically found on dependent surfaces, like the back of a recumbent patient or the lower legs. The center of a lesion may become ulcerative, pustular, vesicular, necrotic, or nodular. They tend to be asymptomatic, but when nodular or ulcerative, they can become tender. Palpable purpura is the most common cutaneous lesion among individuals with inflammatory vascular injury, whereas nonpalpable purpura typically indicates bleeding caused by a platelet or coagulation disorder.^[1]

^ Browning, John; Moise, Levy (2009). "Purpura". In Long, Sarah S. (ed.). Principles and Practice of Pediatric Infectious Disease (3 ed.). Elsevier. pp. 446–448. doi:10.1016/b978-0-7020-3468-8.50081-x. ISBN 978-0-7020-3468-8. Retrieved 12 December 2023.

[Principles_and_Practice_of_Pediatric_3rd-1] Browning, John; Moise, Levy (2009). "Purpura". In Long, Sarah S. (ed.). Principles and Practice of Pediatric Infectious Disease (3 ed.). Elsevier. pp. 446–448. doi:10.1016/b978-0-7020-3468-8.50081-x. ISBN 978-0-7020-3468-8. Retrieved 12 December 2023.

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