Pityriasis rosea is a benign, self-limited
rash that is common in adolescents. A viral prodrome often precedes
the eruption of skin lesions in this disease. The rash usually reaches
its peak in approximately 2 weeks and fades over 4 to
6 weeks. Contact dermatitis is often characterized by well-demarcated
erythema, which is triggered by contact with an environmental irritant.
Nummular eczema is an acute papulovesicular eruption. Rhus dermatitis is
the most common allergic contact dermatitis caused by exposure to poison
ivy. Tinea corporis, commonly known as ringworm, is a superficial
fungal skin infection.
- Pityriasis rosea.
1. Zitelli BJ, Davis HW, editors. Atlas of pediatric physical diagnosis.
3rd ed. St. Louis: Mosby-Wolfe; 1997.
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