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This article discusses a case of a 7-year-old male with dermatitis who was using potassium permanganate, a Chinese herbal medicine, which presented as melanonychia and stained plaques on his feet. The article emphasizes the importance of dermatologists being aware of naturopathic remedies that patients may use, as they can obscure initial skin pathology. Potassium permanganate is commonly used as an alternative therapy and has shown efficacy in managing certain skin conditions, but it also carries risks such as staining, irritation, chemical burns, and toxicity. The article recommends that clinicians inquire about the use of alternative treatments and home remedies to formulate an accurate diagnosis and treatment plan. [Extracted from the article]

This article discusses a case of recurrent erythema multiforme (EM) induced by contact dermatitis to nickel. The patient, a 17-year-old female, experienced painful targetoid blisters on her hands, feet, and chest, as well as erosions on her lips. These lesions recurred every other month and were triggered by direct contact with nickel. Biopsies confirmed the diagnosis of EM, and patch testing revealed a strong positive reaction to nickel sulfate. The patient was initially treated with medication and advised to avoid nickel, but experienced intermittent outbreaks. Eventually, she was started on mycophenolate mofetil, which resulted in no recurrence of symptoms. The article suggests that contact dermatitis to allergens, including nickel, should be considered in cases of recurrent EM. [Extracted from the article]