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. 2022 Jun 29;19(13):7974.
doi: 10.3390/ijerph19137974.

The Role of Pain Inflexibility and Acceptance among Headache and Temporomandibular Disorders Patients

Vanessa Marcelino  1 , Maria Paço  1 , Andreia Dias  2 , Vera Almeida  1 , José Carlos Rocha  1 , Rui Azevedo  1 , Miguel Alves-Ferreira  2 , Carolina Lemos  2 , Teresa Pinho  1   2
Affiliations

The Role of Pain Inflexibility and Acceptance among Headache and Temporomandibular Disorders Patients

Vanessa Marcelino et al. Int J Environ Res Public Health. .

Abstract

Temporomandibular disorders (TMD) and headache are complex. This study aims to assess the association between TMD, headache, and psychological dimensions such as psychological inflexibility and pain acceptance. The sample consisted of 120 participants following a non-probabilistic convenience sampling strategy through a direct invitation to the patients attending our facilities and their relatives (n = 61 diagnosed with headache, n = 34 diagnosed with TMD-headache, n = 25 control group). Diagnostic Criteria for Temporomandibular Disorders (DC-TMD), International Classification of Headache Disorders (ICHD-3 beta version), Chronic Pain Acceptance Questionnaire (CPAQ-8), and Psychological Inflexibility in Pain Scale (PIPS) were used as assessment tools. One-way ANOVA, multiple regression analysis (MRA), and the Johnson-Neyman approach were run by IBM SPSS, version 27 (IBM® Company, Chicago, IL, USA). The significance level was 0.05. One third of our sample presented with headache with TMD. Females were predominant. Males with headache, no systemic disease, less pain severity but higher frequency, living longer with the disease and having sensitive changes, showed higher pain acceptance. When headache occurs with TMD, women with higher education, no headache family history, less pain, and no motor changes showed higher pain acceptance. Patients with both conditions are more liable to have chronic pain and pain inflexibility. Pain intensity and willingness explain 50% of the psychological inflexibility in the headache group. In our sample, individuals suffering from both conditions show greater pain inflexibility, implicating more vivid suffering experiences, leading to altered daily decisions and actions. However, further studies are needed to highlight this possible association.

Keywords: Temporomandibular joint syndrome; chronic pain; headache; pain acceptance pain inflexibility; psychosocial variables.

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Conflict of interest statement

The authors declare that they have no competing interest.

Figures

Figure 1
Figure 1
Moderating role of illness years in the relation between pain willingness and psychological inflexibility in pain in headache group.
See this image and copyright information in PMC

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