October 2023 in “Cancers” Skin cancer in sun-exposed areas is more likely to come back.
5 citations
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April 1984 in “Archives of Dermatology” Porphyria cutanea tarda causes skin issues due to an enzyme deficiency.
June 2025 in “British Journal of Dermatology” Melanocytic matricoma can look like skin cancer but is usually harmless; surgery and follow-up are advised.
September 2018 in “CRC Press eBooks” Hair and nail disorders can cause changes in scalp pigmentation, especially with sun exposure and alopecia.
8 citations
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August 2019 in “JAAD case reports” Chronic cutaneous lupus erythematosus causes scarring, hair loss, and skin discoloration, especially on sun-exposed areas.