<prompt> A 55 year old male, with uncontrolled diabetes mellitus and hypertension, developed severe air-borne contact dermatitis. The most appropriate drug for his treatment would beSystemic corticosteroidsThalidomideAzathioprineCyclosporine  <response>: Treatment of Allergic contact dermatitisTopical corticosteroids in combination with oral antihistaminics are effective in most cases.Extensive contact dermatitis may require treatment with a short course of oral corticosteroids.In air-borne contact dermatitis, azathioprine may be effective.As corticosteroids are contraindicated in patients with DM and hypertension, best option here would be azathioprine 