Adjuvant Hypnotherapy for Hyperemesis Gravidarum: A Randomized Pilot Study

Hyperemesis gravidarum, which requires hospitalization in approximately 1% to 5% of patients, is characterized by severe nausea and vomiting in pregnancy. This study investigated the effects of hypnosis on nausea, vomiting, use of antiemetic medications, and hospital stay among patients diagnosed with hyperemesis gravidarum. Patients were randomized to receive either conventional therapy alone (control condition, n = 23) or adjuvant hypnotherapy plus conventional therapy (treatment group, n = 18). Sociodemographic data, severity of nausea, frequency of vomiting per day, rescue medications used, and length of hospital stay were recorded. Participants in the treatment group received 2 sessions of hypnosis and were instructed in daily self-hypnosis practice. Those in the control group received treatment as usual. Results from this study indicated that adjunctive use of hypnotherapy with patients diagnosed with hyperemesis gravidarum experienced significantly reduced severity of nausea and frequency of vomiting compared to treatment-as-usual alone. Also, hospital stay was found to be shorter in the treatment group as compared to the control group. These findings are encouraging and suggest it is feasible and potentially beneficial to include adjunctive hypnotherapy to treat hyperemesis gravidarum.