Abstract

This study explored the association between self-compassion, alexithymia, and psychosomatic symptom distress in a clinical sample of somatic symptom disorder (SSD) patients participating in a mindfulness-based cognitive therapy (MBCT) program. One hundred sixteen SSD patients who had participated in an MBCT program and completed ≥4 intervention sessions were included in a retrospective study (76.7% women, mean age = 40.0, SD = 9.5). Psychometric measures of psychosomatic symptom distress [Brief Symptom Inventory-18 Global Severity Index (BSI-GSI)], self-compassion [Self-Compassion Scale (SCS)], and alexithymia [Toronto Alexithymia Scale (TAS)] were collected upon admission to the MBCT program and at 6-month follow-up following treatment inclusion. Serial mediation analysis (MBCT→ΔSCS→ΔTAS→ΔBSI-GSI) suggested that changes in both self-compassion and alexithymia had significant indirect effects on improvement in psychosomatic distress [ΔSCS β = -1.810, 95% bootstrap CI (-2.488, -1.160); ΔTAS β = -1.615, bootstrap 95% CI (-2.413, -0.896); ΔSCS→ΔTAS β = -0.621, bootstrap CI (-1.032, -0.315)]. Furthermore, a post-hoc analysis with a reverse sequence (MBCT→ΔTAS→ΔSCS→ΔBSI-GSI) revealed that reduction in alexithymia improved psychosomatic distress and that an increase in self-compassion was a subsequent outcome of alleviation of alexithymia [ΔTAS β = -2.235, bootstrap 95% CI (-3.305, -1.270); ΔSCS β = 0.013, 95% bootstrap CI (-0.600, 0.682); ΔTAS→ΔSCS β = -1.823, bootstrap CI (-2.770, -1.047)]. Both alleviation of alexithymia and improvement in self-compassion play a mediating role in the reduction of psychosomatic distress in SSD patients following an MBCT program. Improvement in self-compassion might be a subsequent outcome of MBCT-related alleviation of alexithymia.

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