A herniated disc is when the spinal disc slides out from between two vertebrae of the spine. A cervical herniated disc occurs in the highest vertebrae located at the back of the head and neck. It is responsible for pain in the neck or headache, sometimes painful or unpleasant sensations of tingling, and numbness called paresthesia at the same level or in one of two arms. Paresthesia is a side-effect of the compression of a nerve passing close by the herniation: this is called cervico-brachial neuralgia. The hernia is identified by an X-ray, CT scan, or MRI. Treatment is usually medication, based on analgesics and anti-inflammatories, and associated with physical therapy. If there is significant impact on the patient's life, surgery may be suggested.