Field testing primary stabbing headache criteria according to the 3rd beta edition of International Classification of Headache Disorders: a clinic-based study

Table 3 Clinical characteristics of primary stabbing headache by ICHD-3 beta criteria at initial visit according to the pain location between trigeminal and cervical areas

	Trigeminal area^a N = 55	Cervical area^b N = 225	P-value
Gender
Male	23 (41.8 %)	80 (35.5 %)	0.388
Female	32 (58.9 %)	145 (64.5 %)	0.388
Age	49.5 ± 13.4	51.8 ± 13.2	0.968
Visual analog scale for pain intensity	4.4 ± 1.6	4.7 ± 1.6	0.787
Improvement at follow-up	43 (97.8 %)	188 (97.9 %)	0.937
Mean duration of improvement (days) among responders^c	3.8 ± 3.2	3.4 ± 2.7	0.145
Preceding infection	5 (10.9 %)	16 (7.1 %)	0.617
Stressful event history	6 (6.8 %)	55 (24.4 %)	0.029
Allodynia	14 (25.4 %)	39 (17.3 %)	0.168

^aV1, V2 and V3 dermatomes
^bLesser occipital nerve, greater occipital nerve, great auricular nerve, and multiple dermatomes. One patient with multiple dermatomes, including V1 region, were included
^c44 out of 55 patients with pain at trigeminal area and 192 out of 225 patients with pain at cervical area were followed at 2 weeks after initial visit, respectively
ICHD-3 beta: the third beta edition of the International Classification of Headache Disorders

ISSN: 1129-2377