Rattanavalai ChantornHenry W. LimTor A. ShwayderMahidol UniversityHenry Ford Hospital2018-06-112018-06-112012-12-01Journal of the American Academy of Dermatology. Vol.67, No.6 (2012)10976787019096222-s2.0-84869138910https://repository.li.mahidol.ac.th/handle/20.500.14594/14468Photosensitivity disorders in children encompass a diverse group of diseases. Compared to adult patients, underlying systemic disorders, including genetic or metabolic defects, are common causes in pediatric photosensitivity disorders. Photosensitivity in a child should be suspected if the child develops a sunburn reaction in sun-exposed sites after limited sun exposure. Diagnosis of a photodermatosis is made based on careful history taking and a physical examination. Early recognition and prompt diagnosis are essential to minimize long-term complications associated with inadequate photoprotection. In part I of this continuing medical education article, immunologically mediated photodermatoses, photodermatoses caused by exogenous photosensitizers, and the cutaneous porphyrias will be covered.Mahidol UniversityMedicineReviewSCOPUS10.1016/j.jaad.2012.07.033