Sunlight exposure

History of cutaneous exposure to solar ultraviolet radiation, relevant to UV-induced effects such as photoaging, photocarcinogenesis (xeroderma pigmentosum), vitamin D synthesis, heliotherapy (psoriasis, vitiligo, eczema), Polymorphous Light Eruption, photosensitivity/phototoxicity/photoallergy (tetracycline, doxycycline, NSAIDs, diuretics, retinoids, lupus), sunburn, and photophobia (migraines, dry eye, keratitis).