Table 3. Cases with different diagnosis by ICHD-3β and explanations.
ICHD-3β code | Subtypes of headache according by ICHD-3β | Cause of change in diagnosis | No. of patients |
---|---|---|---|
1.3 | Chronic migraine | Headache ≥ 15 days/M, with ≥ 8 of those days meeting criteria for migraine | 17 |
Permission of diagnosis with medication overuse headache | 30 | ||
Permission of migraine with aura | 2 | ||
4.2 | Primary exercise headache | Relaxation of the criteria for headache characteristics or duration | 5 |
4.7 | Primary stabbing headache | Deletion of the criteria about the first division of the trigeminal nerve | 114 |
4.8 | Nummular headache | New diagnostic criteria | 1 |
4. | Probable other primary headache, cough/exercise/external pressure headache/PSH/NPDH | Addition of probable diagnostic criteria | 37 |
6.7.3.1 | Headache probably attributed to RCVS | Addition of the probable diagnostic criteria | 7 |
7.3.2 | Headache attributed to aseptic meningitis | Addition of a criterion, "viral meningitis or encephalitis has been diagnosed" in 9.1 | 6 |
11.5.2 | Headache attributed to chronic or recurring rhinosinusitis | New diagnostic criteria | 4 |
4PSH, primary stabbing headache; NPDH, new daily persistent headache; RCVS, reversible cerebral vasoconstriction syndrome.