TLDR Arsenic poisoning can be caused by both criminal acts and certain medical treatments.
The document reported two cases of chronic arsenicism. The first case involved a 37-year-old woman who exhibited symptoms such as leucomelanoderma, plantar keratoderma, polyneuropathy of the legs, and transversal striae of the nails, which were found to be caused by criminal arsenic poisoning by her sister. The second case described a 42-year-old man who developed plantar keratoderma, arsenical keratoses, and two squamous cell epitheliomas 10 years after undergoing a 2-year treatment with Fowler's solution for androgenetic alopecia.
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