The medical term for this activity is "somniloquy." It occurs when you talk out-loud during sleep. A listener may or may not be able to understand what you are saying. Sleep talking can occur by itself. It may also be a feature of another sleep disorder, such as one of the following:
- REM sleep behavior disorder (RBD)
- Sleep terrors
- Sleep related eating disorder (SRED)
The subject matter being talked about tends to be harmless. It may also make no sense at all. At other times, the content may be vulgar or offensive to a listener. The talking can occur many times and might be quite loud. This can disrupt the sleep of a bed partner or roommate.
Sleep talking may occur in any stage of NREM sleep or REM sleep. It is still unknown if the talking is closely linked to dreaming.
Sleep talking that is related to RBD or sleep terrors is much more dramatic. As a part of RBD, talking may be loud, emotional, and profane. Talking during sleep terrors tends to involve intense fear with screaming and shouting.
Who gets it?
How do I know if I have it?
- Another sleep disorder
- A medical condition
- Medication use
- A mental health disorder
- Substance abuse
Do I need to see a sleep specialist?
What will the doctor need to know?
Will I need to take any tests?
How is it treated?
Source: American Academy of Sleep Medicine