Toxic or adverse effects caused by the reaction of light with a photoactive compound present within the body, on the skin, or in the environment; non-allergic effects of this nature.

the quality of causing or suffering toxic or adverse effects from the reaction of light with a compound present within the body, on the skin, or in the environment

the drug is used for the prevention of phototoxicity in adult patients

the test assesses how a chemical affects a person's sensitivity to sunlight, called dermal phototoxicity