Fidgeting may be a motor sign reflecting self-regulation processes in patients with social anxiety disorder (SAD) and depressive patients. Since SAD co-occurs with comorbid depression, the question arises whether fidgeting is a disorder-unspecific phenomenon or a specific and therefore diagnostically relevant sign of depression. 33 SAD patients with (n = 12) and without (n = 21) depression from the Social Phobia Psychotherapy Research Network project were compared regarding their nonverbal behavior. Four video sequences of a psychotherapy session with each patient were analyzed using a standardized system for the analysis of nonverbal behavior by two independent, certified, blind raters. SAD patients with comorbid depression exhibited significantly more (number/minute) irregular movements, but fewer (number/minute) repetitive movements than SAD patients without depression. Irregular movements, which reflect less structured motor behavior, are associated with comorbid depression in SAD. In contrast, in SAD without depression, more structured repetitive movements were prominent. Thus, irregular movements represent a diagnostically relevant behavior for comorbid depression among SAD patients.

中文翻译：

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心理治疗期间的烦躁行为：手部运动结构包含有关抑郁症状的信息

坐立不安可能是反映社交焦虑症 (SAD) 和抑郁症患者自我调节过程的运动标志。由于 SAD 与共病抑郁症同时发生，因此出现的问题是坐立不安是一种疾病非特异性现象还是一种特定的、因此与诊断相关的抑郁症迹象。对来自社交恐惧症心理治疗研究网络项目的 33 名患有 (n = 12) 和不患有 (n = 21) 抑郁症的 SAD 患者的非语言行为进行了比较。使用标准化系统分析每个患者的心理治疗会话的四个视频序列，由两个独立的、经过认证的盲人评估者分析非语言行为。伴有抑郁症的 SAD 患者表现出明显更多的（数量/分钟）不规则运动，但比没有抑郁症的 SAD 患者更少（数量/分钟）重复运动。不规则运动反映了结构性较差的运动行为，与 SAD 中的共病抑郁症有关。相比之下，在没有抑郁症的 SAD 中，更结构化的重复运动更为突出。因此，不规则运动代表了 SAD 患者共病抑郁症的诊断相关行为。