Hypnotherapy for insomnia: A randomized controlled trial comparing generic and disease-specific suggestions

Area of Science:

• Sleep Medicine
• Psychiatry
• Clinical Psychology

Background:

• Hypnotherapy is a common insomnia treatment, but its efficacy and safety are not definitively established.
• Previous studies lacked adverse event monitoring and direct comparisons of suggestion types.

Purpose of the Study:

• To compare the safety and effectiveness of disease-specific versus generic hypnotic suggestions for insomnia.
• To evaluate adverse events and subjective experiences associated with hypnotherapy for insomnia.

Main Methods:

• A randomized controlled trial with 60 participants receiving 4 weeks of weekly hypnotherapy.
• Interventions included disease-specific (targeting anxiety) or generic hypnotic suggestions.
• Sleep efficiency (SE) was the primary outcome, measured via sleep diaries at multiple time points.

Main Results:

• Both hypnotherapy groups showed significant within-group improvements in sleep efficiency (SE).
• No significant differences in SE or other sleep/functioning measures were found between disease-specific and generic suggestion groups.
• Adverse events occurred in 37.0-51.8% of participants, generally mild, with a 10% discontinuation rate.

Conclusions:

• Hypnotherapy, using either disease-specific or generic suggestions, effectively improves sleep and daytime functioning in insomnia.
• The study found no significant benefit of disease-specific suggestions over generic ones for insomnia.
• Adverse events are common in hypnotherapy for insomnia but are typically mild.