From my quick research, your condition can have two causes.

It can be due to disk misplacement which can sometimes be treated by a chiro, PT, or other therapist with traction etc.

It can also be caused by muscle spasms. These muscle spasms could also be the cause of head aches and difficulties sleeping.

Muscle relaxants (Soma) can help but needs to be considered with caution. If the muscle relaxant causes the muscles to be too relaxed, you could cause either further injury or an different injury. Muscles are an integral part of spine health. Allowing them to become relaxed when they are needed for spine support can lead to other problems.

Massage by someone with good knowledge about such a condition can be helpful. Many massage therapist are too generic in their skill set for my taste. A multi-discipline spine clinic may be a good place to find a good treatment program.

btw, This condition is a reversal of the normal curve in the cervical spine.