Tinea corporis appears as an annular plaque with a rim of scaly erythema.
Figure 1 –
An annular plaque with a rim of scaly erythema arose on this woman's back. Tinea corporis was diagnosed.
Figure 2 –
The polycyclic annuli on this patient's torso were suspected to be tinea corporis. A potassium hydroxide evaluation confirmed the diagnosis.
Tinea corporis occurs most often on the torso of elderly persons. It commonly appears as an annular plaque with a rim of scaly erythema (Figure 1). Occasionally, tinea corporis manifests with polycyclic annuli (Figure 2) or with nummular plaques, which mimic nummular dermatitis. The examination of a potassium hydroxide preparation can establish the diagnosis. Tinea corporis can be treated effectively with a topical antifungal agent.
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