一位以味覺異常為主訴的維生素B12缺乏個案

Vitamin B12 Deficiency Presenting as Dysgeusia: A Case Report

維生素B12缺乏臨床表現多樣，且大多以非特異性症狀表現。對於具風險因子的族群，進行長期追蹤且適度補充維生素B12，能提升病人生活品質。本案例為66歲男性，具有胃癌及全胃切除病史，因味覺異常至家庭醫學科門診就醫，舌背外觀部分區域可見舌乳突扁平及泛紅區塊，經評估診斷為維生素B12缺乏所致的萎縮性舌炎。經補充維生素B12後，臨床症狀顯著改善。期望藉由本案例分享，能夠提升臨床醫師對風險族群維生素B12缺乏診斷之敏感度。

Vitamin B12 deficiency presents with a wide range of clinical manifestations, most of which are nonspecific. For high-risk populations, long-term follow-up and appropriate vitamin B12 supplementation can improve patients' quality of life. We report the case of a 66-year-old male with a history of gastric cancer and total gastrectomy who presented to the family medicine outpatient department with dysgeusia. Examination revealed flattened papillae and erythematous patches on partial areas of the dorsal tongue surface. Upon evaluation, he was diagnosed with atrophic glossitis caused by vitamin B12 deficiency. After vitamin B12 supplementation, his clinical symptoms improved significantly. We hope this can will help heighten clinicians’diagnostic sensitivity to vitamin B12 deficiency in high-risk populations.