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Capillaritis is where the capillaries, usually of the legs or lungs, are inflamed, [1] allowing blood cells to pass through. [2]It may occur in the lungs as pulmonary capillaritis, [3] or in the skin as pigmented purpuric dermatosis.
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 can be caused by infection, massage, electrical treatment, acne medication, allergies, exercise, solar radiation (), photosensitization, [3] acute radiation syndrome, mercury toxicity, blister agents, [4] niacin administration, [5] or waxing and tweezing of the hairs—any of which can cause the affected capillaries to dilate, resulting in redness.
The signs and symptoms include a sore throat, fever, headache, swollen lymph nodes, and a characteristic rash. [1] The face is flushed and the rash is red and blanching. [5] It typically feels like sandpaper and the tongue may be red and bumpy. [1] The rash occurs as a result of capillary damage by exotoxins produced by S.pyogenes. [6]
Systemic capillary leak syndrome (SCLS), also called Clarkson's disease, or primary capillary leak syndrome, is a rare, grave and episodic medical condition observed largely in otherwise healthy individuals mostly in middle age. [4]
Occulsion of dermal capillaries by the fat emboli result in petechial rash. Petechiae rash occurs in 50 to 60% of the cases. [7] Neurologic signs such as confusion, stupor, and coma may be present. These are usually temporary and do not happen on one side of the body. Respiratory distress can be mild and tends to improve on the third day.
A port-wine stain (nevus flammeus) is a discoloration of the human skin caused by a vascular anomaly (a capillary malformation in the skin). [1] They are so named for their coloration, which is similar in color to port wine, a fortified red wine from Portugal. A port-wine stain is a capillary malformation, seen at birth. [2]
Diffuse capillary malformation with overgrowth (DCMO) is a subset of capillary malformations (CM) associated with hypertrophy, i.e. increased size of body structures. CM can be considered an umbrella term for various vascular anomalies caused by increased diameter or number of capillary blood vessels.
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