Table 2 Causes of secondary side locked headaches and neuralgias (according to the ICHD-3β) [5]

 5. Headache attributed to trauma or injury to the head and/or neck

Post traumatic, Post craniotomy,

 6. Headache attributed to cranial or cervical vascular disorder

Temporal Arteritis, carotid or vertebral artery dissection, cerebral venous thrombosis, arteriovenous malformation, unruptured aneurysm, Post-endarterectomy headache, intracranial endovascular procedure

 7. Headache attributed to non-vascular intracranial disorder

intracranial neoplasia (especially pituitary and CP angle tumor, Chiari malformation 1,

 10. Headache attributed to disorder of homoeostasis

Airplane travel headache, Cardiac cephalalgia

 11. Headache or facial pain attributed to disorder of the cranium, neck, eyes, ears, nose, sinuses, teeth, mouth or other facial or cervical structure

Cervicogenic headache, glaucoma, ocular inflammatory disorder, trochleitis, disorder of the ears, rhinosinusitis, teeth or Jaw, temporomandibular disorder, inflammation of the stylohyoid ligament.

 12. Headache attributed to psychiatric disorder

Somatization,

 13. Painful cranial neuropathies and other facial pains

Trigeminal neuralgia, Painful trigeminal neuropathy (e.g. Acute Herpes Zoster, Post-herpetic), Glossopharyngeal neuralgia, nervus intermedius neuralgia, Occipital neuralgia, Optic neuritis, ischaemic ocular motor, nerve palsy, Tolosa-Hunt syndrome, Paratrigeminal oculosympathetic (Raeder’s) syndrome, Recurrent painful ophthalmoplegic neuropathy, Persistent idiopathic facial pain, Central post-stroke pain.