The mediating role of alexithymia in the relationship between affective temperament and craving: Cross-sectional study conducted in a sample of bipolar and alcohol use disorder patients

Abstract

BackgroundBipolar disorder (BD) and alcohol use disorder (AUD) commonly co-occur and their interplay is influenced by several factors. Alexithymia is connected to BD and AUD; affective temperaments serve as risk factors for both; craving contributes to the development and maintenance of AUD. The present study tested whether alexithymia play a mediating role in the relationship between affective temperaments and craving in alcoholic bipolar patients. Methods151 alcoholic bipolar patients (38 % females, mean age: 45.69 ± 9.04 years) were enrolled. The Mini International Neuropsychiatric Interview (MINI), the Brief Psychiatric Rating Scale (BPRS), the Toronto Alexithymia Scale (TAS-20), the Temperament Evaluation of the Memphis, Pisa, Paris and San Diego scale (TEMPS-A), and the Typology Craving Questionnaire (CTQ) were administered. Correlations among TAS-20, TEMPS-A, CTQ were conducted. Regression analyses were applied to verify the mediating hypothesis. ResultsDifficulty in identifying feelings mediated the association between anxious temperament and craving (Indirect effect: 0.42, BCaCI: 0.22–0.69), cyclothymic temperament and craving (Indirect effect: 0.55, BCaCI: 0.30–0.87), irritable temperament and craving (Indirect effect: 0.45, BCaCI: 0.19–0.80). TAS-20 difficulty in communicating feelings to others mediated the association between anxious temperament and craving (Indirect effect: 0.20, BCaCI: 0.06–0.41). LimitationsThe sample size did not allow subgroup analyses. Data were collected cross-sectionally and in a single center. We did not investigate whether BD or AUD occurred first, although it might influence the mediation role of alexithymia. ConclusionAmong alcoholic bipolar patients, assessing and targeting alexithymia may be useful to modulate craving and, in turn improve, the general mental status of patients.