Yes likely posture is a contributing factor.
You may have arthritis or spondylosis at the cervical spine area.
This can cause nerve compression and such symptoms.
Initial treatment for cervical radiculopathy is nonsurgical. Nonsurgical treatment options include:
Soft cervical collar. This is a padded ring that wraps around the neck and is held in place with Velcro. Your doctor may advise you to wear a soft cervical collar to allow the muscles in your neck to rest and to limit neck motion. This can help decrease the pinching of the nerve roots that accompany movement of the neck. A soft collar should only be worn for a short period of time since long-term wear may decrease the strength of the muscles in your neck.
Physical therapy. Specific exercises can help relieve pain, strengthen neck muscles, and improve range of motion. In some cases, traction can be used to gently stretch the joints and muscles of the neck.
Medications. In some cases, medications can help improve your symptoms.
Nonsteroidal anti-inflammatory drugs (NSAIDs). NSAIDs, including aspirin, ibuprofen, and naproxen, may provide relief if your pain is caused by nerve irritation or inflammation.
Oral corticosteroids. A short course of oral corticosteroids may help relieve pain by reducing swelling and inflammation around the nerve.
Steroid injection. In this procedure, steroids are injected near the affected nerve to reduce local inflammation. The injection may be placed between the laminae (epidural injection), in the foramen (selective nerve injection), or into the facet joint. Although steroid injections do not relieve the pressure on the nerve caused by a narrow foramen or by a bulging or herniated disk, they may lessen the swelling and relieve the pain long enough to allow the nerve to recover.