Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.


n. pl. pho·to·sen·si·tiv·i·ties
1. Sensitivity or responsiveness to light.
2. Medicine 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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˌfoʊ təˌsɛn sɪˈtɪv ɪ ti)

1. the quality of being photosensitive.
2. abnormal sensitivity of the skin to ultraviolet light, usu. following exposure to certain drugs or chemicals.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.photosensitivity - sensitivity to the action of radiant energy
sensitivity, sensitiveness, sensibility - (physiology) responsiveness to external stimuli; the faculty of sensation; "sensitivity to pain"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[ˌfəʊtəʊsensɪˈtɪvɪtɪ] Nfotosensibilidad f
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


n fotosensibilidad f
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
The relationship between cutaneous manifestations and systemic involvement indicated that there is an absolute association between malar rash and systemic involvement and a relative association between cutaneous manifestations like photosensitivity, vasculitis, oral ulcers and hair loss, and increased systemic involvement.
Erythropoietic protoporphyria (EPP), a rare inborn error of metabolism that usually manifests in early childhood as severe photosensitivity, causes excruciating pain 1-20 minutes after exposure to the sun.
There were cases of serious photosensitivity that required hospitalization, and the prescribing information recommends that patients use sun protection and limit sun exposure during treatment.
Phenobarbital can cause morbilliform reactions, urticaria, erythema multiforme, photosensitivity, and purpura.
While pharmacists frequently counsel their patients about contraindications when filling prescriptions, those involved in the sun care category note that the potential for greater photosensitivity is also an area that should be discussed.
Photosensitivity is typically 0.9 A/W at 1.31 mm and 0.95 A/W at 1.55 mm.
It is a relatively safe drug, but about 30% of patients develop side effects that include headache, gastrointestinal upset, and photosensitivity.
The most common adverse events associated with the treatment were photosensitivity, dizziness, anorexia, and elevated [gamma]-glutamyl transpeptidase.
Xeroderma pigmentosum is characterized by early onset photosensitivity, photophobia, and multiple freckles.
14 September 2010 - US-based biopharmaceutical company Icagen Inc (NASDAQ: ICGN) announced yesterday that due to the occurrence of a serious adverse event in the photosensitivity study of ICA-105665, it suspended further enrollment in the study.
If you are taking a medication that causes photosensitivity, it's best to avoid sun exposure when the sun's rays are strongest, typically between 10 a.m.
Two of Lee-Anne and Phil's children, Jake, 11, and six-year-old Charlee, suffer from idiopathic epilepsy with photosensitivity.