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photodermatitis meaning

  "photodermatitis" in a sentence
  • [Medicine]
    Abnormal responses to sunlight or artificial light due to extreme reactivity of light-absorbing molecules in tissues. It refers almost exclusively to skin photosensitivity,including sunburn,reactions due to repeated prolonged exposure in the absence of photosensitizing factors,and reactions requiring photosensitizing factors such as photosensitizing agents and certain diseases. With restricted reference to skin tissue,it does not include photosensitivity of the eye to light,as in photophobia or photosensitive epilepsy. n pl -ti·tis·es or -tit·i·des : any dermatitis caused or precipitated by exposure to light

Examples

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  1. Surface contact with some such chemicals causes photodermatitis; many plants cause phytophotodermatitis.
  2. Photodermatitis and phototoxicity have also been reported.
  3. Photodermatitis is sometimes a symptom .-- talk ) 16 : 14, 26 November 2008 ( UTC)
  4. Many sunscreens do not block UVA radiation, which does not primarily cause sunburn but can increase the rate of melanoma and photodermatitis.
  5. Ingestion of pigments capable of producing singlet oxygen with activation by light can produce severe photosensitivity of skin ( see phototoxicity, photosensitivity in humans, photodermatitis, phytophotodermatitis ).

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