A herniated disc occurs when the outer portion of a spinal disc tears, allowing the inner portion to protrude and put pressure on nearby nerves or the spinal cord. In some cases, a herniated disc can heal on its own with proper treatment and rest. However, in other cases, the damage to the disc may be permanent.    If the herniation is severe and the disc is unable to heal itself, it may cause long-term or permanent damage to the spinal nerves or cord. This can result in chronic pain, numbness or weakness in the affected area, and other neurological symptoms. Some people may experience long-term or permanent damage, while others may make a full recovery with appropriate care.