Table 2 Frequency of red flags.
From: Frequency and phenotype of headache in covid-19: a study of 2194 patients
Red flag | Frequency (n, %) | Sample (n) |
|---|---|---|
Fever | 263 (59.2%) | 444 |
Worst headache ever experienced | 113 (26.0%) | 343 |
Wake-up headache | 97 (21.2%) | 458 |
Precipitated by coughing | 93 (21.5%) | 433 |
Treatment resistant | 84 (19.4%) | 434 |
Precipitated or aggravated after sitting upright or standing | 63 (14.5%) | 434 |
Progressive headache | 60 (13.1%) | 458 |
Precipitated by bending | 59 (12.9%) | 458 |
Confusion | 27 (6.2%) | 434 |
Sudden onset | 25 (5.8%) | 434 |
Precipitated after lying horizontally | 24 (5.5%) | 434 |
Loss of consciousness | 2 (0.5%) | 433 |
