<prompt> Tinea Incognito isItchy skin lesion whose causative organism is not knownTinea infection on backTinea infection seen after corticosteroid treatmentTinea infection of nailbed.  <response>: Tinea incognito is atypical tinea caused by incorrect treatment of lesions with topical corticosteroids, where the lesions are asymptomatic, extensive and does not have scales. 