Department of Medical Rehabilitation, Oulu University Hospital, Oulu, Finland.
Cogn Neuropsychiatry. 2023 Nov;28(6):424-436. doi: 10.1080/13546805.2023.2275336. Epub 2023 Nov 30.
Patients with functional disorders (FD) often experience cognitive problems such as forgetfulness and distractibility alongside physical symptoms that cannot be attributed to a known somatic disease.
Test scores of cognitive tests and psychiatric rating scales of 100 outpatients diagnosed with a functional disorder were compared to a control group (n = 300) of patients with other diagnoses and to test norms for the general population.
Out of the 100 patients with functional disorders, 59 reported significant subjective cognitive symptoms. A moderate difference (d = 0.5-0.7) was found between the FD group mean and the population mean in processing speed tests, as well as in four psychiatric rating scales (depression, anxiety, phobias, somatisation) but there were no statistically significant differences in verbal and nonverbal reasoning or in logical memory. Somatisation and logical verbal memory scores were higher in the FD group compared to the control group.
The findings of the study suggest that a decline in processing speed is a central feature in the cognitive profile of patients with functional disorders.
功能性疾病（FD）患者常伴有认知问题，如健忘和注意力不集中，以及无法归因于已知躯体疾病的躯体症状。
将 100 名功能性疾病诊断患者的认知测试和精神病评定量表测试分数与其他诊断患者的对照组（n=300）和一般人群的测试标准进行比较。
在 100 名功能性疾病患者中，有 59 名报告有明显的主观认知症状。在加工速度测试中，FD 组的平均值与人群平均值之间存在中度差异（d=0.5-0.7），以及在四个精神病评定量表（抑郁、焦虑、恐惧症、躯体化）中，但在言语和非言语推理或逻辑记忆方面没有统计学上的显著差异。躯体化和逻辑言语记忆评分在 FD 组高于对照组。
研究结果表明，加工速度的下降是功能性疾病患者认知特征的一个核心特征。
