The case of a 51 year old woman, working in the field of agriculture, is reported; she developed a photoallergic dermatitis and a fulminant hepatitis after the use of the herbicide phenmedipham (Betanal). Photopatch-testing revealed sensitization to phenmedipham and, additionally, to maprotiline hydrochloride (Ludiomil), an antidepressant taken by the patient at about the same time. The possible relationship of these reactions with the clinical symptoms are discussed.