phototoxic
adjective
pho·to·tox·ic ˌfō-tō-ˈtäk-sik 
1
: rendering the skin susceptible to damage (such as sunburn or blisters) upon exposure to light and especially ultraviolet light
phototoxic antibiotics
2
: induced by a phototoxic substance
phototoxicity
ˌfō-tō-täk-ˈsi-sə-tē
noun 
Example Sentences
Recent Examples on the Web And then there's the more common ruta graveolens, a phototoxic plant with sap that can make your hands blister in bright sunlight, and so on and so on. 
Darren Orf, Popular Mechanics, 30 May 2017
Darren Orf, Popular Mechanics, 30 May 2017 Word History
First Known Use
1931, in the meaning defined at sense 1
Medical Definition
phototoxic
adjective
pho·to·tox·ic ˌfōt-ō-ˈtäk-sik
1
: rendering the skin susceptible to damage (as sunburn or blisters) upon exposure to light and especially ultraviolet light
phototoxic antibiotics
a phototoxic topical agent
2
: induced by a phototoxic substance
a phototoxic response