Stress and emotional distress: their associations with somatic and temporomandibular disorder-related symptoms.

Although Asians are posited to be predisposed to somatization, studies on the inter-relationships between emotional and physical symptoms in Asian youths are still limited. This study determined the associations between emotional, somatic, and Temporomandibular Disorder (TMD)-related symptoms in Asian youths. Youths were recruited from a local polytechnic and the prevalence/severity of emotional distress was ascertained with the Depression, Anxiety, and Stress Scale-21. Somatic and TMD-related symptoms were appraised with the Patient Health Questionnaire-15 and Fonseca Anamnestic Index. Data were analysed using non-parametric statistical and logistic regression analysis (p < 0.05). The study sample (n = 400; 209 females) had a mean age of 18.7 ± 1.7 years. Moderate-to-severe depression, anxiety, and stress were present in 31.0%, 36.8%, and 16.5% of the subjects respectively. Subjects with moderate-to-severe emotional distress had significantly higher somatic and TMD symptom scores (p < 0.001). Correlations between emotional and somatic/TMD symptom scores were moderately strong (rs = 0.46-0.61). Stepwise logistic regression indicated that moderate-to-severe somatization was associated with the female gender, anxiety, and stress, and moderate-to-severe TMDs were related to somatization and stress. Asian youths with elevated emotional distress experienced significantly higher levels of somatic and TMD-related symptoms. The stress construct appears to pose a greater risk for somatization and TMDs than depression and anxiety.