When fatigue and cognitive impairment persist- a neurological follow-up-study in patients with Post-COVID syndrome.

Considering the relevance for patients, economics and public health data about the course of the neurological Post-COVID Syndrome (PCS) are urgently needed. In this study 94 PCS patients (73% female, age in median 49 years) were examined in median 9.4 (T1) and for a second time 14 months (T2) after mild to moderate SARS-CoV-2 infection. Mood, sleep quality and health related quality of life (QoL) were evaluated via structured anamnesis and self-report questionnaires; attention, concentration and memory via psychometric tests. 47% of the patients reported an improvement of their symptoms over time, but only 12% full recovery. 4% noticed deterioration and 49% no change. Main disturbances at both time points were fatigue, deficits in concentration and memory. In patients with perceived improvement QoL significantly increased between T1 and T2, although their test performance as well as the fatigue score remained unchanged. In patients with persisting impairment QoL, fatigue scores and psychometric test results did not change significantly. Abnormal psychometric tests were more frequent at both time points in the group without improvement. But, significant fatigue and cognitive impairment persisted for more than 1 year after SARS-CoV-2 infection in both groups.