Table 2. Etiologies according to ICHD 3 classification.

Group n(%)	Etiology	n
Primary Headaches 145 (59.4)	1.1 Migraine without aura	34
	1.2 Migraine with aura	73
	1.4.1 Status migrainosus	29
	1.4.2 Persistent aura without infarction	1
	2. Tension type headache	2
	3.1.1 Cluster Headache	2
	3.2.1 Paroxysmal hemicrania	1
	3.3.1 SUNCT	1
	3.4 Hemicrania Continua	1
	4.7.1 Probable primary stabbing headache	1
Secondary Headaches 63(25.9)*	6.2.1 Headache attributed to non-traumatic intracerebral hemorrhage	3
	6.2.2 Headache attributed to non-traumatic subarachnoid hemorrhage (SAH)	2
	6.3.2 Headache attributed to arteriovenous malformation (AVM)	1
	7.1.1 Headache attributed to idiopathic intracranial hypertension (IIH)	1
	7.4.1 Headache attributed to intracranial neoplasm	4
	9.1.3.1 Acute headache attributed to intracranial fungal or other parasitic infection	2
	9.2.2 Headache attributed to systemic viral infection	7
	10.3.2 Headache attributed to hypertensive crisis without hypertensive encephalopathy	6
	11.4/11.5 Headache attributed to disorders of the ears and paranasal sinuses	12
	11.7 Headache attributed to temporomandibular disorder	1
	12.1 Headache attributed to somatization disorder	1
Non-classified 21(8.6)	14.1 Headache not elsewhere classified	21
Painful cranial neuropathies and other facial pains 15(6.1)	13.4 Occipital neuralgia/other extracranial neuralgias	8
	13.5 Optic neuritis	1
Appendix	A11,2.5- Headache attributed to cervical myofascial pain	23

*Including 23 cases of A11,2.5- Headache attributed to cervical myofascial pain