Content reviewed by the PillRelax Healthcare Team | Last reviewed: September 2026
Chronic pain and poor sleep form a destructive cycle – pain disrupts sleep, and poor sleep lowers pain tolerance and worsens pain perception.
How Pain Affects Sleep
Chronic pain impairs sleep in several ways. Physical discomfort makes it difficult to find a comfortable position. Pain activates the sympathetic nervous system, keeping the body in a state of heightened alertness incompatible with deep sleep.
How Poor Sleep Worsens Pain
Sleep deprivation lowers the pain threshold – people who sleep poorly are measurably more sensitive to painful stimuli. Poor sleep also promotes inflammatory processes that can worsen conditions like arthritis and fibromyalgia.
Medicines Used for Pain-Related Insomnia
- Amitriptyline (low dose) – tricyclic commonly prescribed at 10-25mg for dual action on pain and sleep
- Pregabalin – reduces nerve pain and has sedative properties
- Short-term hypnotics – Zopiclone or Zolpidem to break the acute insomnia cycle
Frequently Asked Questions
What is the best painkiller for sleeping?
Amitriptyline at low doses is often the first choice in UK clinical practice, as it addresses both pain and sleep simultaneously.
