<prompt> Sexually active male comes with complaints of recurrent ulcers over the glans which heals with hyperpigmentation, probable diagnosis is -Aphathous ulcerFixed drug eruptionHerpes genitalisChlamydial infection  <response>: Fixed drug eruption manifests as skin lesions at fixed sites following drug intake. The lesions progressively fade over several days often leaving a residual post inflammatory brown pigmentation. Page no.294. Reference IADVLs concise textbook of dermatology 