This article describes an unusual presentation of a blue finger in a middle-aged woman with no significant past medical history. The patient was diagnosed with Achenbach syndrome, a rare condition that is generally considered transient and benign. The underlying pathophysiology of this condition is unclear, but may be related to transient subcutaneous ecchymosis, possibly from microtrauma. If the condition recurs, a workup can include laboratory tests for autoimmune diseases such as rheumatoid arthritis. Clinician awareness of this presentation may reduce patient anxiety and unnecessary testing.

中文翻译：

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一个奇怪的蓝手指案例

本文描述了一位没有明显既往病史的中年女性蓝手指的异常表现。该患者被诊断出患有 Achenbach 综合征，这是一种罕见的疾病，通常被认为是暂时的和良性的。这种情况的潜在病理生理学尚不清楚，但可能与短暂性皮下瘀斑有关，可能来自微创伤。如果病情复发，检查可以包括对自身免疫性疾病（如类风湿性关节炎）的实验室检查。临床医生了解此演示文稿可能会减少患者的焦虑和不必要的测试。