What are the symptoms of headaches caused by cervical vertebrae?

Headache caused by cervical spine is caused by hyperosteogeny of neck joints, narrowing of gaps, or compression of nerves caused by instability of cervical spine, because the neck is fixed in a position for too long and often lowers its head. In addition to pain, it is also accompanied by limited flexion and extension of cervical spine, and dull pain in the neck, shoulder, and arm on the painful side. Pain begins in the neck, gradually can extend to the ipsilateral eyes, forehead, temporal, some pain is more intense, will involve the opposite side, some patients will also be accompanied by nausea, vomiting, dizziness, fear of light, blurred eyes, swallowing difficulties and other manifestations. Symptoms are generally directly related to neck movement, such as sudden large neck rotation. Headache occurs when the need to reduce neck movement, can wear a neck brace protection, patients can also take vasodilators, such as flunarizine capsules.