A 30 year old female presents with history of itching under right breast. On examination annular ring lesion was present under the breast. The diagnosis is –

The findings of itchy annular ring lesions on the trunk point towards the diagnosis of Tinea corporis. Though Tinea corporis can be caused by all the three - Trichophyton, Epidermophyton and Microsporum; Trichophyton rubrum is the most common cause.