actinodermatitis

noun
ac·ti·no·der·ma·ti·tis | \-ˌdər-mə-ˈtīt-əs \
plural actinodermatitises or actinodermatitides\-ˈtit-ə-ˌdēz \

Medical Definition of actinodermatitis 

: dermatitis resulting from exposure to sunlight, X-rays, or radiation from radium

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