The Cervicogenic Headache Society defines CGH as headache pain that radiates to the head's regions and is mostly caused by nociceptors associated with musculoskeletal disorders. A unilateral headache and neck discomfort resulting from dysfunction of the osseous, disc, and soft tissue constituents of the cervical vertebrae are known as a cervicogenic headache (CGH). It frequently comes with neck pain. Through the trigeminocervical nucleus, pain from the neck can be transmitted to the head. It is anatomically and functionally coherent with the posterior gray columns that constitute these spinal segments, and it extends through the canal of the spinal cord to the C3/4 vertebral column. Convergence refers to the possibility that sensory afferents' input—mainly from the upper 3 cervical nerve roots—may be misinterpreted as discomfort in the head.