Objective: In the present scenario the number of controlled and systematic studies on the role of patch test in adverse cutaneous drug reaction (ACDR) is limited. Objective in this study, we planned to evaluate the patch test for the identification of causative drug in drug reaction with possibly delayed type of hypersensitivity (DTH). Methods: The cases of ACDR those having DTH such as maculopapular rash (MPR), fixed drug eruption (FDE), erythema multiforme, lichenoid dermatitis (LD), Steven – Johnson syndrome (SJS), Toxic epidermal necrolysis (TEN) and exfoliative dermatitis (Exf. DER) were taken in study. Thirty two patients (21 Males __ampersandsign 11 Females) were patch tested with market preparation of 28 drugs having 1% and 5% concentration. Result and conclusion: The incidence of ACDR amongst dermatology outpatients was approximately 1%. The percentage of DTH reaction amongst ACDR patients was 52.38%. The FDE was the commonest pattern seen in DTH patients. Five out of thirty two patients (15.62%) tested positive to the suspected drugs. Three out of 26 patients with FDE showed positive patch test at clinically normal site while both, the patients with MPR tested positive. None of the patients with SJS, Exf. DER __ampersandsign LDR showed positive patch test. More prospective study regarding patch test in ACDR is needed.