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The risk of skin cancer induced by photosensiting drugs is well known. An association between hydrochlorothiazide use and skin cancer has been recently published in some epidemiological studies. A systematic review of case-control or prospectives cohorts showed an increased risk of cutaneous squamous cell carcinoma even if some confusing factors such as tobacco smoking was not analysed. Results are more conflicting for basal cell carcinoma or melanoma. These results do not modify the benefit/risk ratio but should lead to propose preventive mesures: identification of high risk population, avoidance of this drug if possible in immunocompromised patients or with previous skin cancer, regular skin examination in case of long term use of hydrochlorothiazide., (Copyright © 2019 Société Nationale Française de Médecine Interne (SNFMI). Published by Elsevier Masson SAS. All rights reserved.)