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I have a dark rash that appears in almost perfect circles. What could this be?

1 doctor weighed in
Dr. Ralph Morgan Lewis
Family Medicine

In brief: "ringworm" is fungal

Infection of skin (tinea corporis) [no worms involved].
Starts as point & grows outward, giving ring appearance. Edge slightly raised, may be slightly scaly, center looks normal. Treat with otc antifungal cream like Lamisil (terbinafine) until all lesions gone at least a week. Check pets as source of fungus. Athletes can get it from gym mats, which should be sanitized regularly.

In brief: "ringworm" is fungal

Infection of skin (tinea corporis) [no worms involved].
Starts as point & grows outward, giving ring appearance. Edge slightly raised, may be slightly scaly, center looks normal. Treat with otc antifungal cream like Lamisil (terbinafine) until all lesions gone at least a week. Check pets as source of fungus. Athletes can get it from gym mats, which should be sanitized regularly.
Dr. Ralph Morgan Lewis
Dr. Ralph Morgan Lewis
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