Sleep paralysis

Also called Isolated sleep paralysis

Sleep paralysis is when you cannot move or speak as you are waking up or falling asleep. It usually lasts from a few seconds to a couple of minutes. Some people also feel pressure on the chest or sense someone in the room. It happens when part of the brain is still in dream sleep. It is common and often linked to not getting enough sleep, irregular sleep or stress.

Last updated Nov 9, 2026

What it is

It is not harmful and usually happens only now and again.

Improving sleep habits often helps. If it happens a lot, it can sometimes be a sign of narcolepsy, and a sleep specialist may help.

Common signs

  • Being unable to move or speak when waking or falling asleep
  • Feeling pressure on the chest
  • Sensing someone in the room
  • Seeing or hearing things that are not there
  • Feeling frightened

How it is usually diagnosed

  • Questions about symptoms and sleep
  • Sometimes a referral to a sleep clinic

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • GP notes
  • Sleep clinic letters
  • A sleep diary

Questions to ask your doctor

  • What can I do to improve my sleep?
  • Could this be a sign of another sleep condition?
  • Should I see a sleep specialist?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • Sudden weakness or numbness on one side, or slurred speech that does not go away after waking: call 112

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

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