The eruption consists of skin-colored papules that occur anywhere on the body but often concentrate on the extensor surfaces of the arms, legs, and buttock Lesions are particularly prominent over the elbows and knees The rash usually lasts to weeks and then disappears No treatment is needed for the cutaneous eruption; however, a subset of patients with cutaneous lesions develops generalized lymphadenopathy and hepatosplenomegaly These children should be evaluated for hepatitis and follow-up in weeks is recommended for patients with only cutaneous involvement to exclude hepatitis Scabies Scabies is discussed in Chapter 70 Rash: Papulosquamous Eruptions and Viral Exanthems Chronic Eruptions Without Fever Chronic eruptions are defined as those that are usually present for a minimum of weeks Atopic Dermatitis Although the eruption may have a variable appearance (erythema, edema, papules, vesicles, serous discharge, and crusting), its constant feature is pruritus The eruption often has a characteristic distribution, depending on age, and often occurs in allergic (atopic) individuals or those with a family history of allergies (e.g., hay fever, asthma, allergic rhinitis, food allergies, eosinophilic gastroenteritis) Please see full discussion in Chapter 65 Rash: Atopic/Contact Dermatitis and Photosensitivity Tinea Dermatophyte infections usually last longer than weeks A full discussion can be found in Chapter 66 Rash: Bacterial and Fungal Infections/Rash: Maculopapular In short, tinea corporis is characterized by one or more sharply circumscribed scaly patches The center of the circular patch generally clears as the leading edge spreads out The leading edge may be composed of papules, vesicles, or pustules The lesions are most commonly confused with nummular eczema The diagnosis can be made by scraping the active outer rim of papules and examining the scales with a potassium hydroxide (KOH) preparation under the microscope These lesions not fluoresce under the Wood light Treatment with topical antifungal agents such as clotrimazole, miconazole, econazole, terbinafine, and butenafine produces clearing in to 10 days Therapy should be maintained for at least weeks If improvement does not occur, treatment with