A painful and itchy reddish/purple patch of skin that occurs in the same location with repeated exposures to the culprit<unk>  is the classic presentation of a<unk> . The lips, genitals, and hands are often involved.
Fixed drug reaction
Gateway drug effect
Idiosyncrasy
Idiosyncratic drug reaction
Acute toxicity
Simulator sickness
Bullous drug reaction
Drug interaction