Cutaneous adverse reactions induced by drugs are common. They occur in 1 to 3% of drugs users. The aim of this study is to determine the frequency of cutaneous adverse drug reactions, describe the clinical aspects of these reactions and determine the scores of imputability relating the possible drug-effect relationship in Morocco. This is a prospective study of cutaneous adverse drug reactions occurring in patients in El Idrissi hospital in Kenitra during the period April 2012-April 2013. The analysis of cause-effect relationships between the drug and the occurrence of clinical and paraclinical effects is conducted by the French causality assessment method with 7 scores from 0 to 6. Among 5137 hospital admissions, 45 patients developed 53 cutaneous adverse drug reactions, which was 1.02%. The average age of the patients was 35.39