Pruritic rash that bleeds with trauma most commonly involves the ankles and volar surfaces of the wrist lesions can be intraoral associated with certain drugs and hepatitis C infectionÄiagnosis is clinical, but biopsy can confirm Violaceous, flat-topped papules with fine white or gray reticular, lacy lines on top of the rash Treatment options include antivirals and systemic corticosteroids for recurrent symptoms Lesions develop over a few days and usually resolve within three to five weeks without treatment 90% of cases are associated with herpes simplex virus type 1, and 10% of cases are associated with medications or vaccinations Multiple raised, annular, target-like lesions with central erythema Treatment options include topical steroids and vitamin D analogues for mild cases and systemic corticosteroids, phototherapy, and biologic agents for severe cases Pruritic lesions often associated with stress, alcohol, or friction Well-demarcated, erythematous, annular plaques with adherent silvery scales Treatment options include doxycycline, amoxicillin, cefuroxime (Ceftin), and ceftriaxone (Rocephin) Lesion appears three to 30 days after tick bite, often preceded by an influenza-like prodrome of fever, malaise, and myalgias Treatment options include topical and systemic antifungalsÄ®xpanding, erythematous, annular rash with or without central clearing Potassium hydroxide preparation may detect segmented hyphae Lesions develop after close contact with infected persons, animals, or soil warm, moist environments exacerbate lesions Scaly, erythematous annular plaques with raised borders that spread centrifugally Annular lesions occur less commonly in persons with fixed drug eruptions, leprosy, immunoglobulin A vasculitis, secondary syphilis, sarcoidosis, subacute cutaneous lupus erythematosus, and granuloma annulare. Urticaria results from the release of histamines and appears as well-circumscribed, erythematous lesions with raised borders and blanched centers. Pityriasis rosea presents with multiple erythematous lesions with raised, scaly borders, and is generally self-limited. Treatment is aimed at reducing skin dryness. Nummular eczema presents as a rash composed of coin-shaped papulovesicular erythematous lesions. Lichen planus characteristically appears as planar, purple, polygonal, pruritic papules and plaques. Erythema multiforme, which is due to a hypersensitivity reaction, presents with annular, raised lesions with central clearing. Plaque psoriasis generally presents with sharply demarcated, erythematous silver plaques. Recognizing erythema migrans is important in making the diagnosis of Lyme disease so that antibiotics can be initiated promptly. Tinea corporis may be diagnosed through potassium hydroxide examination of scrapings. A pruritic, annular, erythematous patch that grows centrifugally should prompt evaluation for tinea corporis. Knowledge of the physical appearance and history of presentation of these skin findings can help in the diagnosis. Annular lesions can present in a variety of diseases.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |