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Patients with reticular erythematous mucinosis have also been reported to have other conditions like myxedema, hypothyroidism, Hashimoto's thyroiditis, monoclonal gammopathy, and HIV infection. [7] [8] Menstruation, heat, x-ray therapy, oral contraceptives, pregnancy, and perspiration can all induce or worsen reticular erythematous mucinosis. [9]
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 ().
This type of rash can be as a result of large doses of niacin or no-flush niacin (2000 – 2500 mg), [citation needed] used for the management of low HDL cholesterol. [4] This type of rash can also be a symptom of Sea bather's eruption. This stinging, pruritic, maculopapular rash affects swimmers in some Atlantic locales (e.g., Florida ...
Confluent erythematous and edematous patches on cheeks ("slapped cheek") for 1-4 days followed by a "lacy," reticular, erythematous rash on the body. Roseola infantum (exanthem subitum) "sixth disease" HHV-6 and HHV-7: Rapid onset of erythematous, blanching macules and papules surrounded by white halos on the trunk after 3-5 days of high fever.
The diagnosis may confirm any number of conditions. The presence of a rash may aid diagnosis; associated signs and symptoms are diagnostic of certain diseases. For example, the rash in measles is an erythematous, morbilliform, maculopapular rash that begins a few days after the fever starts. It classically starts at the head, and spreads downwards.
The dermis is the layer of skin between the epidermis and subcutaneous tissue, and comprises two sections, the papillary dermis and the reticular dermis. [10] The superficial papillary dermis interdigitates with the overlying rete ridges of the epidermis, between which the two layers interact through the basement membrane zone. [10]
[1] [2] The rash consists of macular lesions that are red and usually 2–10 mm in diameter but may be confluent in places. [3] A morbilliform rash is a rose-red flat or slightly elevated (maculopapular) eruption, showing circular or elliptical lesions varying in diameter from 1 to 3 mm, with healthy-looking skin intervening. [citation needed]
The most common lesions are erythema nodosum, plaques, maculopapular eruptions, subcutaneous nodules, and lupus pernio. Treatment is not required, since the lesions usually resolve spontaneously in two to four weeks. Although it may be disfiguring, cutaneous sarcoidosis rarely causes major problems. [1]