Sleep Talking

Sleep talking, or somniloquy, is a parasomnia in which speech occurs without awareness or memory. It ranges from mumbling to full sentences, can happen in any sleep stage, and is most common in children, easing with age. It is harmless on its own, and the main consequence is usually disturbance to a bed partner. Triggers are the same ones that fragment sleep generally: sleep deprivation, stress, fever, alcohol, and irregular schedules. Content spoken during sleep is not a reliable window into thoughts or intentions and should not be interpreted as such. What matters clinically is company it keeps. Sleep talking alongside complex behaviours such as walking, or alongside apparent acting out of dreams with punching or kicking, changes the picture - the latter can indicate REM sleep behaviour disorder, which warrants specialist assessment particularly after age 50. There is no supplement with evidence for sleep talking. The practical levers are regular sleep timing, adequate sleep duration, reducing alcohol, treating stress, and earplugs or white noise for the partner.