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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.
People with lipodermatosclerosis have tapering of their legs above the ankles, forming a constricting band resembling an inverted champagne bottle. [3] [5] In addition, there may be brownish-red pigmentation and induration. [5]
Cherry angioma, also called cherry hemangioma [1] or Campbell de Morgan Spot, [2] is a small bright red dome-shaped bump on the skin. [3] It ranges between 0.5 – 6 mm in diameter and usually several are present, typically on the chest and arms, and increasing in number with age.
The rash is generally made up of small spots of bleeding and starts on the wrists and ankles. [10] Other symptoms may include muscle pains and vomiting. [3] Long-term complications following recovery may include hearing loss or loss of part of an arm or leg. [3]
In the embryo, the epidermis, hair, and glands form from the ectoderm, which is chemically influenced by the underlying mesoderm that forms the dermis and subcutaneous tissues. [ 5 ] [ 6 ] [ 7 ] The epidermis is the most superficial layer of skin, a squamous epithelium with several strata : the stratum corneum , stratum lucidum , stratum ...
They present as multiple small or large bumps characteristically on the heels and wrists. [2] Most are asymptomatic and pain is rare, although some may present with pain before the bumps are noticed. [3]
Stasis dermatitis is diagnosed clinically by assessing the appearance of red plaques on the lower legs and the inner side of the ankle. Stasis dermatitis can resemble a number of other conditions, such as cellulitis and contact dermatitis, and at times needs the use of a duplex ultrasound to confirm the diagnosis or if clinical diagnosis alone is not sufficient.
Lesions consist of erythematous and purpuric macules which usually begin around the ankles, coalesce, and spread to involve the whole legs, and sometimes the trunk and upper extremities. The lesions are extremely pruritic (itchy) and occasionally lichenified after prolonged scratching. It was characterized in 1953. [4]