Unmasking Tinea Incognito: Case Study, Insights Into the Pathogenesis, and Recommendations.

Tinea incognito (TI) is a dermatophyte infection that often presents atypically due to the inappropriate use of corticosteroids or other immunosuppressive treatments, complicating its diagnosis and management. This case report describes a 29-year-old American Indian (Maya) female from Yucatán, Mexico, initially diagnosed with inverse psoriasis and treated with topical corticosteroids. Over several months, her condition deteriorated, with lesions spreading and worsening, ultimately revealing TI.