<prompt> True about chancroid isIncubation period is 3 to 10 weeks.Characterised typically by prodromal symptoms and systemic reaction.Painful ulcer with irregular erythematous non-indurated margins.Ulcer base is hard, indurated.  <response>: Chancroid:Incubation period 3 to 10 daysIt lacks systemic reaction and prodrome.Ulcer base is soft. 