Patient has non herpetic genital ulcer (no blisters) for which blue kit was given to cover syphilis and chancroid. Patient presented with rash and fever suggestive allergy to pencillin present in blue kit. Now it has to be replaced with white kit that contains Doxycycline instead of penicillin. Blue kit : Injection benzathine penicillin(single dose) + T.Azithromycin 1g (single dose) White kit : T.Doxycycline 100 mg BD for 2 weeks + T.Azithromycin 1g single dose