photodermatitis


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photodermatitis

 [fo″to-der″mah-ti´tis]
an abnormal state of the skin in which light is an important causative factor.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

pho·to·der·ma·ti·tis

(fō'tō-der'mă-tī'tis),
Dermatitis caused or elicited by exposure to sunlight; may be phototoxic or photoallergic, and can also result from topical application, ingestion, inhalation, or injection of mediating phototoxic or photoallergic material.
See also: photosensitization.
Synonym(s): actinic dermatitis
[photo- + G. derma, skin, + -itis, inflammation]
Farlex Partner Medical Dictionary © Farlex 2012

pho·to·der·ma·ti·tis

(fō'tō-dĕr'mă-tī'tis)
Dermatitis caused or elicited by exposure to sunlight; may be phototoxic or photoallergic, and can result from topical application, ingestion, inhalation, or injection of mediating phototoxic or photoallergic material.
See also: photosensitization
Synonym(s): actinic dermatitis, actinodermatitis.
[photo- + G. derma, skin, + -itis, inflammation]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Blepharospasm, swollen eyelids, pruritus, photokeratitis, and photodermatitis of feet and eyelids were observed in all UVB irradiated birds at the outset of day 3 of experiment BB1, at which point this experiment was stopped.
Photokeratitis and photodermatitis result from excess exposure.
However, a dose of 180 mJ/[cm.sup.2] (BB3), the product of a longer exposure to less than half the irradiance compared with BB1, resulted, in a few birds, in only mild signs of photodermatitis and photokeratitis after 4 days.
When considering this, we can infer that the minimum dose (MED) of broadband UVB capable of causing photokeratitis and photodermatitis in budgerigars ranges between 150 and 300 mJ/[cm.sup.2], which is 10 times the MED for humans.
Many dermatologists consider this condition to be a form of photodermatitis with marked post inflammatory pigmentation, while exposure to cutting oils has also been incriminated.
Consequently, such drug induced photodermatitis can be prevented by mere withdrawal of the causative drug and replacement with alternative drugs.
Because the perfume is often applied to the chest, the ensuing photodermatitis which resembles a pendent, was referred to as 'necklace dermatitis'.
Photodermatitis provoked by dapsone: a case report.
Dapsone-induced photodermatitis in a patient with leprosy.
Or the truck driver with "photodermatitis," who was really allergic to ingredients in his sunscreen.
Anti-psoriatic action of lutein demonstrated by inhibition of rat photodermatitis. J Pharm Pharmacol 50:78 (1998).