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Schamberg's disease, (also known as "progressive pigmentary dermatosis of Schamberg", [1] "purpura pigmentosa progressiva" (PPP), [1] and "Schamberg's purpura" [1]) is a chronic discoloration of the skin found in people of all ages, usually only affecting the feet, legs or thighs or a combination. It may occur as a single event or subsequent ...
Purpura (/ ˈ p ɜːr p jʊər ə / [1]) is a condition of red or purple discolored spots on the skin that do not blanch on applying pressure. The spots are caused by bleeding underneath the skin secondary to platelet disorders, vascular disorders, coagulation disorders, or other causes. [ 2 ]
A petechia (/ p ɪ ˈ t iː k i ə /; [1] pl.: petechiae) is a small red or purple spot (≤4 mm in diameter) that can appear on the skin, conjunctiva, retina, and mucous membranes which is caused by haemorrhage of capillaries.
Pigmented purpuric dermatosis are distinguished from other purpura by size (0.3–1 cm) and are most often seen in the lower extremities. [ 1 ] : 829 Pigmentary purpuric eruptions may present with one of several clinical patterns.
Majocchi's disease, also known as Purpura annularis telangiectodes of Majocchi [1] is a not-well-recognized and uncommon skin condition characterized by purple/bluish-red 1- to 3-cm annular patches composed of dark red telangiectases with petechiae.
There are numerous causes of palpable purpura, such as autoimmune diseases, drug reactions, vaccinations, and infections.The most common infectious causes are N. gonorrhoeae, S. aureus, and N. meningitides, however palpable purpura has also been caused by Mycoplasma spp., Rickettsiae, Mycobacterium, and very rarely by Treponema pallidum, Brucella spp., Yersinia, Campylobacter, and Bartonella.
Gougerot–Blum syndrome is a variant of pigmented purpuric dermatitis, a skin condition characterized by minute, rust-colored to violaceous, lichenoid papules that tend to fuse into plaques of various hues.
Doucas and Kapetanakis pigmented purpura, also known as eczematoid purpura, [1] or eczematoid-like purpura, [2] is a skin condition characterized by scaly and eczematous patches, which also have petechiae and hemosiderin staining. [3]: 830 It is a lymphocytic capillaritis of unknown cause. Lesions consist of erythematous and purpuric macules ...