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Livedo reticularis is a common skin finding consisting of a mottled reticulated vascular pattern that appears as a lace-like purplish discoloration of the skin. [1] The discoloration is caused by reduction in blood flow through the arterioles that supply the cutaneous capillaries, resulting in deoxygenated blood showing as blue discoloration ().
The medical term for mottled skin is dyschromia. [3] Although this is not always the case, mottling can occur in the dying patient and commonly indicates that the end of life is near. Mottling usually occurs in the extremities (lower first) and progresses up as cardiac function declines and circulation throughout the body is poor. [3]
Tinea versicolor (also pityriasis versicolor) is a condition characterized by a skin eruption on the trunk and proximal extremities. [1] The majority of tinea versicolor is caused by the fungus Malassezia globosa, although Malassezia furfur is responsible for a small number of cases.
Podoconiosis causes bilateral yet asymmetrical leg swelling with overlying firm nodules. Early on, symptoms may include itching, tingling, widening of the forefoot, and swelling which then progress to soft edema, skin fibrosis, papillomatosis, and nodule formation resembling moss, giving rise to the disease's alternate name of "mossy foot" in some regions of the world. [3]
Acrocyanosis is characterized by peripheral cyanosis: persistent cyanosis of the hands, feet, knees, or face. [4] The extremities often are cold and clammy and may exhibit some swelling (especially in warmer weather).
Malassezia furfur is a fungus that lives on the superficial layers of the dermis.It generally exists as a commensal organism forming a natural part of the human skin microbiota, but it can gain pathogenic capabilities when morphing from a yeast to a hyphal form during its life cycle, through unknown molecular changes. [2]
A 42-year-old Belgian tourist was taking a short walk Saturday in the sand dunes in 123-degree heat when he either broke or lost his flip-flops, putting his feet into direct contact with the ...
Athlete's foot, known medically as tinea pedis, is a common skin infection of the feet caused by a fungus. [2] Signs and symptoms often include itching, scaling, cracking and redness. [3] In rare cases the skin may blister. [6] Athlete's foot fungus may infect any part of the foot, but most often grows between the toes. [3]