TY - CHAP M1 - Book, Section TI - Photosensitivity and Other Reactions to Light A1 - Marneros, Alexander G. A1 - Bickers, David R. A2 - Jameson, J. Larry A2 - Fauci, Anthony S. A2 - Kasper, Dennis L. A2 - Hauser, Stephen L. A2 - Longo, Dan L. A2 - Loscalzo, Joseph PY - 2018 T2 - Harrison's Principles of Internal Medicine, 20e AB - Sunlight is the most visible and obvious source of comfort in the environment. The sun provides the beneficial effects of warmth and vitamin D synthesis. However, acute and chronic sun exposure also has pathologic consequences. Cutaneous exposure to sunlight is a major cause of human skin cancer and can have immunosuppressive effects as well. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/11/12 UR - accessmedicine.mhmedical.com/content.aspx?aid=1156504866 ER -