You can tell someone is talking in their sleep (somniloquy) by listening for mumbled, garbled, or surprisingly clear speech during the night, ranging from single words to full sentences, often happening in short bursts, with the key sign being the person's complete unawareness and lack of memory about it when they wake. They might seem to be talking to themselves, to others, or even shouting or whispering, but it's an unconscious act, not a conscious conversation.
Sleep talking symptoms may also include:
There is no single cause of sleep talking. It may be genetic and run in families. It can also be triggered by stress, sleep deprivation, or certain medications. Sleep talking can occur at any age, but is most common in children and adolescents.
Yes -- sleep talking (somniloquy) can produce statements that are false, misleading, or intentionally deceptive in content, but the mechanism differs from waking lying.
In the study, researchers found that sleep talkers said the word "no" four times more often in their sleep than when awake. And the F-word popped up during sleep talking at a rate of more than 800 times than what was spoken while awake.
Talking in your sleep is a kind of parasomnia, or a disruptive sleep-related disorder that happens while you're sleeping. Unlike other parasomnias like sleepwalking or sleep-related eating disorder that can carry significant risks to your health and well-being, sleep talking usually has little to no risk.
The words can be smooth and clear or may be mumbled and hard to understand. Sleep talking may involve simple sounds or long, involved speeches. Sleep talkers usually seem to be talking to themselves. But sometimes, they appear to carry on conversations with others.
Sleep talking is predominantly seen in individuals with mental health issues or conditions such as post-traumatic stress disorder (PTSD), depression, and anxiety. Sleep talking can also be associated with nightmares, especially in children.
In most cases, the sleep talker does not remember what they say. Their partner or roommate is usually the person to find and report the words. Some people can have a sleep diary to wake up to become more aware of their sleep talking, and even if this happens frequently enough it should be considered a problem.
Why shouldn't you wake up sleep talkers? Waking up a sleep talker is generally not harmful, but it can be startling and disorienting for them. It's usually best to let them continue sleeping unless they are in danger of harming themselves or others.
RBD is a powerful early warning sign for Lewy body–related dementias. Anyone who acts out dreams during sleep should be evaluated by a physician. Monitoring over time is key. Regular follow-up visits can help detect early cognitive or movement changes that suggest progression.
Sleep-talking can also be caused by depression, sleep deprivation, day-time drowsiness, alcohol, and fever. It often occurs in association with other sleep disorders such as confusional arousals, sleep apnea, and REM sleep behavior disorder.
Children are more likely to talk in their sleep and can outgrow it as they age. As children get older, sleep talking episodes usually decrease and can happen once every few months or so. They are most common in kids ages two to 12.
Sleep talking is not dangerous and shouldn't be a huge concern if you or someone you know does it. Sleep talking can cause some awkward situations or become annoying to your bed partner, but the talker is not usually aware of the incident.
A Harmless Quirk of the Night
For most people, sleep talking is simply a harmless, albeit interesting, quirk. It's a brief glimpse into the active, dreaming mind. By focusing on healthy sleep habits and managing stress, you can often reduce its frequency.
While there's no single "rarest," the Stomach (Prone) position is often cited as the least common, with only about 7-10% of adults preferring it, followed by the Starfish (back with arms up), which is also uncommon (around 5-7%), though it's a popular back-sleeping variation. Other less frequent, but notable, positions include the Log (side sleeper with straight limbs) and T-Rex arms (neurodivergent self-soothing).
Most times, sleep talking sounds more like babbling than intelligible sentences. “If you're looking for an elixir of truth, sleep talking isn't it,” she adds. “That's a myth that's persisted for decades.”
“I can't eat a dolphin” and “Can I have a bucket of water to do my homework, please?” are just some of the bizarre things that the Medical News Today team has said while sleeping.
In general, the three subtypes were associated with increased rates of sleep problems/disorders. Specifically, ADHD-C rather than ADHD-I was associated with circadian rhythm problems, sleep-talking, nightmares (also ADHD-HI), and ADHD-I was associated with hypersomnia.
Parasomnias are most common from about ages 3 to 10, with most children outgrowing them by the tween years. They typically occur 1 to 3 hours after falling asleep, and last 5 to 40 minutes.
There are over 80 different types of sleep disorders. The most common include: Chronic insomnia: You have trouble falling asleep or staying asleep most nights for at least three months and feel tired or irritable as a result.
The Four-Word Sleep Phrase: “This Thought Can Wait”
This simple sentence packs a surprisingly powerful punch. When you say it to yourself—gently but firmly—it creates a boundary between you and your runaway thoughts. It doesn't require solving, denying, or arguing with your brain.
10 hours before bed: No more caffeine. 3 hours before bed: No more food or alcohol. 2 hours before bed: No more work. 1 hour before bed: No more screen time (shut off all phones, TVs and computers).
They may lash out or fall, which could injure them or the person waking them. According to Wright, it is best to gently encourage or lead a sleepwalker back to bed and let them get on with their night's rest.
Overview. Rapid eye movement (REM) sleep behavior disorder is a sleep disorder in which you physically act out vivid, often unpleasant dreams with vocal sounds and sudden, often violent arm and leg movements during REM sleep — sometimes called dream-enacting behavior.