Sometimes poor sleep is linked to a recognised sleep disorder.
These conditions are fairly common, but they are often undiagnosed for long periods because people assume their sleep difficulties are simply “normal”.
Examples include:
- insomnia
- sleep apnoea
- excessive daytime sleepiness
- restless legs syndrome
- sleep paralysis
- sleepwalking
- night terrors or nightmares
This page is intended to inform and guide rather than diagnose. If you are concerned about symptoms it is sensible to speak with your GP.

