A 27-year-old man presented with weight loss, diarrhea, tremor, and proximal muscle weakness. The blood level of potassium was 1.8 mmol per liter. A diagnosis was made.

中文翻译：

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病例 13-2024：一名 27 岁男子，腿部无力

一名 27 岁男性出现体重减轻、腹泻、震颤和近端肌无力。血钾浓度为每升 1.8 毫摩尔。做出了诊断。