Tinea_incognito
Tinea incognita
Fungal skin infection caused by the presence of a topical immunosuppressive agent
Tinea incognita, also spelled tinea incognito, is a fungal infection of the skin that generally looks odd for a typical tinea infection.[1][2][lower-alpha 1] The border of the skin lesion is usually blurred and it appears to have florid growth.[1]
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It generally occurs following the application of a steroid cream to what at first is thought to be eczema.[1] Continued application results in expansion of the fungal infection which appears unrecognisable.[3] Occasionally, secondary infection with bacteria occurs with concurrent pustules and impetigo.[5]