Osteo Arthritis, Cervical Spondylosis, Frozen Shoulders, Rheumatoid ArthritisCERVICAL SPONDYLOSIS is the most common progressive disorder in the aging cervical spine. It results from the process of degeneration of the intervertebral discs and facet joints of the cervical spine. Biomechanically, the disc and the facets are the connecting structures between the vertebrae for the transmission of external forces. They also facilitate cervical spine mobility. The developmental process, together with the degenerative process, may cause mechanical pressure on the spinal cord at one or multiple levels. This pressure may produce direct neurological damage or ischemic changes and, thus, lead to spinal cord disturbances.Cervicogenic headacheIntroductionCervicogenic headache (CH) is a chronic, hemicranial pain syndrome in which the source of pain is located in the cervical spine or soft tissues of the neck but the sensation of pain is referred to the head. The pain may spread to the neck, occipital area of skull, area of jaw and eyeballs, and arms. Cervicogenic headache is characterised by a non-throbbing pain that starts in the neck and spreads to the ipsilateral oculo-fronto-temporal area. In patients with this disorder, attacks or chronic fluctuating periods of neck/head pain may be provoked/worsened by sustained neck movements or stimulation of ipsilateral tender points. According to the clinical researches, in 15-20% of the patients with chronic unilateral headache, it is the case of the headache of cervical origin. In 2004 cervicogenic headache was introduced into ICD-10 classification.