Effects of High-Dose Capsaicin on TMD Subjects: A Randomized Clinical Study.

Area of Science:

• Neurology
• Pain Management
• Dermatology

Background:

• Temporomandibular joint disorder (TMD) causes significant orofacial pain and limited jaw function.
• Existing TMD treatments are limited, necessitating novel therapeutic approaches.
• TRP vanilloid subfamily member 1 (TRPV1) is a potential target for pain control.

Purpose of the Study:

• To evaluate the efficacy and safety of 8% topical capsaicin cream for TMD pain relief.
• To investigate capsaicin's effect on pain perception and sensory thresholds in TMD patients.
• To explore capsaicin's potential as a novel treatment targeting TRPV1 in TMD.

Main Methods:

• A double-blind, vehicle-controlled clinical trial was conducted.
• Participants received either 8% capsaicin cream or a vehicle control.
• Quantitative sensory testing (QST) and visual analog scale (VAS) for pain were used.

Main Results:

• TMD subjects treated with capsaicin reported significantly lower pain intensity one week post-application.
• A temporary decrease in thermal pain threshold was observed shortly after capsaicin application in both groups.
• Capsaicin did not affect pressure pain threshold or mechanical sensitivity.

Conclusions:

• 8% topical capsaicin is a safe, simple, and effective treatment for TMD pain.
• Targeting TRPV1 with capsaicin offers a promising new avenue for managing orofacial pain in TMD.
• This study provides evidence for capsaicin as an additional therapeutic option for TMD patients.