Neuropsychiatric symptoms, skin disease, and weight loss: necrolytic migratory erythema and a glucagonoma

A 55-year-old man was referred to our dermatology clinic because of progressive, changing, painful skin lesions, a burning sensation in his mouth, and irritation of his tongue. He had also lost 12 kg and reported increased thirst. The patient also developed delusions of grandeur and persecution at the same time as the skin problem, and weight loss started 4 months earlier. Further, 7 days before these difficulties, he had been depressed and had...