This is tricky.
I would first recommend you actually see a doctor (not the chiropractor) about this if it is chronic.
This would need more information though to give any ideas for treatment. For instance, is this from repetitive motion to the area, a one time accident, stress? Is this muscular or a change/chipping to bones.
This is why you need to please see a doctor.
You can try steambaths, saunas, breathing exercises and light stretching exercises. This is assuming it's muscular.
Outside of this, there are natural muscular relaxant suppliments you can try. However, visit your doctor first. If, for some reason, you are also taking any natural suppliments/herbs/etc for this, please tell your doctor which ones.
Best of luck. I wouldn't want to wish this pain on anyone.