<prompt> Which of the following is true about erythema multiforme: September 2011Triggered mainly by HIV infectionTarget lesions are seenFull blown prodromal symptomsInvolvement of mucosa more common  <response>: Ans. B: Target lesions are seen Typical lesion of erythema multiforme is a target lesion, which consists of 3 concentric components 1 central dusky erythema, sometimes surmounted with a vesicle bulla, 2 pale edematous ring and 3 erythematous halo Erythema in dermatology: Erythema induratum: Bazins disease Erythema nodosum: Multisystemic disorders e.g. sarcoidosis Erythema chronicum migrans: Lymes disease 