Hallo Ray,

To try to distinguish the nature of pain so

-pain felt in the morning and diminshes progressivly,as day go by is an indicative of chronic inflamation.
-pain and stiffness felt at the beginning of activity and decrease as the activity continues may indicate a muscle problem.
-pain felt in morning and continues increasing as day go by may indicate a sleeping posture..

Also let ur patient check if s/he have a sinusitis,vision problems,blood problems(as high or low bp),ear problems,....


Hope this could help u!

Regards