Hi Thank you for this question to HCM. Disorientation, disturbance in thinking and difficulty to remember are disturbances of higher neural functions related to brain and unlikely to be coming from cervical spondylosis. Cervical spondylosis is a terminology used for degenerative changes in cervical spine which are age related. Common symptoms are neck pain, pain at the junction of head and neck and pain at the base of neck radiating into shoulders. Severe changes may lead to compression of the spinal cord and nerves to give tingling, numbness, grip weakness, difficulty with fine hand functions like buttoning clothes and frequent loss of balance while walking. It would be helpful to know if you have fever, blurring of vision, sensitivity to light or any other symptoms. Evaluation of other central nervous system function is necessary. I would suggest consulting a neurologist for clinical examination, objective testing and imaging as necessary. Hope this is helpful. I would be happy to answer any questions.