| ACT | Acceptance and Commitment Therapy. |
| CNS | Central Nervous System |
| CPSS | Central Pain Sensitization Syndrome. |
| CTTH | Chronic tension-type headache. |
| FMS | Fibromyalgia Syndrome. |
| HRQoL | Health Related Quality of Life. |
| IBS | Irritable Bowel Syndrome. |
| IC | Interstitial Cystitis. |
| ICHD-3 beta | International Classification of Headache Disorders, third edition (beta version). |
| TMD | Temporomandibular disorder. |
| TTH | Tension-Type Headache. |
| USA | United States of America. |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.