TABLE 1.

Diagnostic criteria for cervicogenic headache

CHISG Diagnostic Criteria (1)	IHS Diagnostic Criteria (10)
Symptoms and signs of neck involvement: Precipitation of head pain, similar to the usually occurring one: by neck movement and/or sustained awkward head posturing, and/or by external pressure over the upper cervical or occipital region on the symptomatic side Restriction of the range of motion (ROM) in the neck Ipsilateral neck, shoulder, or arm pain of a rather vague nonradicular nature or, occasionally, arm pain of a radicular nature. Confirmatory evidence by diagnostic anesthetic blockades. Unilaterality of the head pain, without sideshift.	Pain, referred from a source in the neck and perceived in one or more regions of the head and/or face, fulfilling criteria C and D Clinical, laboratory, and/or imaging evidence of a disorder or lesion within the cervical spine or soft tissues of the neck known to be or generally accepted as a valid cause of headache Evidence that the pain can be attributed to the neck disorder or lesion based on at least one of the following conditions: Demonstration of clinical signs that implicated a source of pain in the neck Abolition of headache after diagnostic block of a cervical structure or its nerve supply by use of a placebo or other adequate controls Pain resolves within 3 months after successful treatment of the causative disorder or lesion
For a diagnosis of CGH to be appropriate, one or more aspects of Point I must be present, with Ia sufficient to serve as a sole criterion for positivity or Ib and Ic combined. For scientific work, Point II is obligatory, while Point III is preferably obligatory.	The presence of all four of these criteria is an indication that a diagnosis of CGH is appropriate.