The inflammatory process is caused by a reaction of the immune system, which can be triggered by an "infection or by the use of certain drugs." Polymorphic erythema usually causes mild symptoms and resolves spontaneously within a few weeks.
"Polymorphic erythema typically manifests with" cockade "or" target "skin lesions, ie consisting of a purplish-purple central disc and a pink halo separated by a pale intermediate ring. At the eruption site, patients they may have itching or a burning sensation.
Erythema multiforme appears mainly on the face and on the extremities of the limbs (especially palms of the hands and soles of the feet). On some occasions, the inflammation also involves the mucous membranes of the oral cavity, leading to erosive lesions and blisters on the palate and gums.
Diagnosis of polymorphic erythema is based on physical examination; rarely, biopsy is needed. Treatment is symptomatic and involves the use, if necessary, of corticosteroids and analgesics. Other measures depend on the etiology: for example, if the disease is the consequence of an adverse reaction to a drug, it is advisable to immediately stop taking it.
any redness of the skin caused by an increase in the blood supply in that particular area of the body. The peculiarity of this manifestation consists in disappearing under the pressure of the fingers, and then reappearing when the same ceases. There are various forms of erythema: induced by drugs, correlated to the exposure of sunlight or, again, associated with mechanical, thermal, chemical, infectious, toxic, hormonal and psycho-emotional causes. In addition, this skin reaction can appear in the course of allergies to drugs, foods and personal hygiene products.
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