phototoxicity


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pho·to·tox·ic·i·ty

(fō'tō-tok-sis'i-tē),
The condition resulting from an overexposure to ultraviolet light, or from the combination of exposure to certain wavelengths of light and a phototoxic substance.
See also: photosensitization.
[photo- + G. toxikon, poison]

pho·to·tox·ic·i·ty

(fō'tō-tok-sis'i-tē)
The condition resulting from an overexposure to ultraviolet light, or from the combination of exposure to certain wavelengths of light and a phototoxic substance.
See also: photosensitization
[photo- + G. toxikon, poison]

phototoxicity (fōˈ·tō·tk·siˑ·s·tē),

n an adverse reaction to ultraviolet light or sunlight caused by chemicals, such as the furanocoumarins.

phototoxicity

pertaining to phototoxic.

primary phototoxicity
see solar dermatitis, sunburn.
References in periodicals archive ?
Typically, cosmetic ingredients undergo toxicological testing for eye and skin irritation, genotoxicity, skin sensitization and phototoxicity (if relevant).
Phototoxicity and photoallergy are different expressions of an abnormal skin reaction from the exposure to light, usually enhanced by endogenous or exogenous substances, which are selectively activated by solar radiation.
Hansen alerted pediatricians that doxycycline is associated with phototoxicity in some patients.
Among our top priorities for toxicologic evaluation, we must include DNA-based products, herbal medicines, chemical mixtures, and phototoxicity.
the system will read and analyze samples of native cell cultures, cell cultures 3d structures (nanospheres, microspheres, spheroids, organoidu), fixed preparations and tissue sections in transmitted light with phase contrast and fluorescence using multicolor low phototoxicity.
Neither trial reported cases of phototoxicity or photosensitivity, and none of the female patients developed oral or vaginal candidiasis during treatment with anti-inflammatory--dose doxycycline, he emphasized.
A Phototoxicity Center to study cosmetic chemicals and additives, sunblock additives, tanning enhancers, skin colorants, and tattoo inks
The second poster (Poster B25) [2] covered the results of a single-center, double-blind, randomized, vehicle placebo-controlled study to determine whether the administration of Xerese[TM] or its vehicle would cause a phototoxicity reaction when applied to skin that is exposed to sunlight.
Low laser powers avoid photobleaching and phototoxicity in live cell imaging applications.
Exogenously induced photosensitivity diseases include phototoxicity and photoallergy.
As part of its approval decision, the FDA will require 3M to conduct postmarketing studies on phototoxicity, on imiquimod's safety and effectiveness in treating actinic keratoses not on the face or scalp, and on the safety of treating surface areas greater than 25 [cm.
In the 1980s, Forbes and fellow dermatologists at Temple University in Philadelphia launched the first phototoxicity tests using simulated sunlight when they tested retinoic acid (Retin-A).