photosensitivity

[ foh-tuh-sen-si-tiv-i-tee ]
/ ˌfoʊ təˌsɛn sɪˈtɪv ɪ ti /

noun

the quality of being photosensitive.
abnormal sensitivity of the skin to ultraviolet light, usually following exposure to certain oral or topical drugs or to other sensitizing chemicals and resulting in accelerated burning and blistering of the skin.

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Origin of photosensitivity

First recorded in 1915–20; photo- + sensitivity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for photosensitivity

photosensitivity
[ fō′tō-sĕn′sĭ-tĭvĭ-tē ]

n.

Sensitivity or responsiveness to light.
An abnormally heightened response, especially of the skin, to sunlight or ultraviolet radiation, caused by certain disorders or chemicals and characterized by a toxic or allergic reaction.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for photosensitivity

photosensitivity
[ fō′tō-sĕn′sĭ-tĭvĭ-tē ]

Sensitivity or responsiveness to light.
An abnormally heightened response, especially of the skin or eyes, to sunlight or ultraviolet radiation, caused by certain disorders, medications, or chemicals.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.