Developing an abnormally heightened reactivity to light.

An increase in sensitivity to sunlight, resulting in sunburned skin when exposed to ultraviolet light.

abnormally sensitive to light.

abnormally increased sensitivity to ultraviolet rays or sunlight

Dermatitis involving the white skinned areas induced by the reaction of compounds in the skin with ultraviolet light.

Sensitization or heightened reactivity of the skin to sunlight, usually due to the action of certain drugs.

Process by which a substance or organism becomes sensitive to light.