Why Your Physiotherapist Asks About Sleep, Stress and Mood

It can be irritating. You came about a sore back and somebody wants to know how you are sleeping. It is not small talk, and it is not a polite way of suggesting the pain is in your head. Sleep, stress and mood measurably change how much pain a given injury produces, and they are among the few things in a rehabilitation plan you can do something about this week.

Pain is produced, not detected

The common picture is a pain signal travelling from the sore part to the brain, like a doorbell. That is not how it works. Tissues send information about pressure, temperature and damage; the nervous system decides, moment to moment, how much of a problem that information represents and how loudly to say so.

That decision is influenced by a great deal besides the tissue: how much sleep you had, what else is going on, whether you are frightened of the pain, what you have been told it means. None of this makes pain imaginary. It makes it adjustable, which is a far more useful thing for it to be.

Sleep is the strongest of the three

The link between poor sleep and pain runs both ways, and the evidence is reasonably clear that the stronger direction is sleep to pain rather than pain to sleep. Short or broken sleep lowers the threshold at which something registers as painful, which is why a disturbed week makes a familiar back feel worse without anything having changed in the back.

It also has a direct effect on rehabilitation. Tissue repair and the strength adaptations you are working for happen largely during sleep. Exercising hard on four hours' sleep gets you a fraction of the return.

What actually helps is unglamorous: a consistent wake time, daylight early in the day, the bedroom cool and dark, and getting out of bed if you have been lying awake for twenty minutes rather than lying there getting frustrated. For pain specifically, working out a position that genuinely settles the sore part is worth ten minutes of a physiotherapy appointment.

Stress changes what your muscles are doing

Sustained stress does two measurable things. It raises resting muscle tone, particularly around the neck, jaw and shoulders, so muscles that should be idle are quietly working all day. And it turns up the sensitivity of the nervous system, so the same input produces more pain.

This is why neck and shoulder pain so often arrives in a difficult month at work, and why it responds to things that have nothing to do with the neck. It is also why a treatment that loosens the muscle helps for a day and then stops helping: the loosening was real, but the thing keeping it tight has not changed.

Mood and the confidence to move

Low mood and anxiety affect pain partly through the same nervous system sensitivity, and partly through something simpler: they change what you are willing to do. Someone who is worried about damaging their back moves carefully, avoids the things that once hurt, and slowly does less. Doing less means losing capacity, and lost capacity means more things hurt. That loop is one of the best-understood mechanisms in persistent pain, and it is entirely reversible.

The way out is not positive thinking. It is graded exposure: picking something you have been avoiding, doing a version of it small enough to be safe, and building up in steps until your own experience contradicts the fear. It works because it produces evidence, not because it produces optimism.

What does this look like in an appointment?

It should be practical, not a therapy session. In practice it means:

• Asking about sleep, and doing something about it — finding a position that settles the sore part, pacing the day so you are not wrecked by nine, dealing with the pain that wakes you at three
• Explaining what the pain does and does not mean — for most musculoskeletal problems, hurt and harm are different things, and knowing which one you are dealing with changes how you move
• Setting the exercise dose to what you can actually recover from rather than what looks impressive on paper
• Working out what you have stopped doing, and building a route back to one specific thing you want
• Knowing the limits of the job — a physiotherapist is not a psychologist, and where mood is the main problem the right move is to say so and suggest your GP

Does this mean the pain is in my head?

No. All pain is produced by the nervous system, including the pain of a broken bone, and that is true whether or not you slept well. Saying that sleep changes pain is a statement about mechanism, not about whether you are making it up. The practical upshot is the opposite of dismissive: it means there are more levers to pull than just the sore part, and several of them are in your control.

Home physiotherapy across Hertfordshire

Home visits are available across St Albans, Harpenden, Watford, Hemel Hempstead, Stevenage, Hertford and across Hertfordshire.

About Leah Edwards

Leah Edwards is a chartered physiotherapist (MCSP, HCPC PH122795) providing home visit physiotherapy across St Albans, Harpenden, Watford, Hemel Hempstead, Stevenage, Hertford and across Hertfordshire. She qualified with a First from London South Bank University in 2020, spent her early career in the NHS in intensive care, medical rehabilitation and musculoskeletal outpatients, and has worked in private clinics around St Albans and Harpenden since 2022. She also spends one day a week in a private hospital treating people after hip, knee, shoulder and foot or ankle surgery. She assesses and diagnoses directly, so there is no wait for a GP referral before treatment can start.

Read Leah's profile or call 07490 128910.

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