Fig. 1From: Brain fog of post-COVID-19 condition and Chronic Fatigue Syndrome, same medical disorder?Severity and frequency of symptoms (DSQ). *p < 0.05 **p ≤ 0.01; 0: Lack of symptoms; 1: Mild; 2: Moderate; 3: Severe; 4: Very severe; F: Frequency; ME/CFS: Myalgic Encephalomyelitis/Chronic Fatigue Syndrome; S: SeverityBack to article page