If you live with a neurological condition, you have probably noticed your muscles feel tight, stiff, or hard to move in ways that are not quite the same as ordinary muscle soreness. That is often spasticity. It can affect how you walk, sleep, transfer in and out of a wheelchair, dress yourself, and use your hands for everyday tasks.
01 . What it is
What muscle spasticity actually is
Muscle spasticity is a velocity-dependent increase in muscle tone. In plain language, the faster you try to move a limb, the more the muscle pushes back. It is different from ordinary stiffness or a normal protective spasm, because it comes from changes in the central nervous system, not from a problem in the muscle itself.
The damage usually sits in the brain or spinal cord. When the pathways that normally calm muscle tone are interrupted, the spinal cord’s reflex circuits become overactive. The result is muscles that feel tight at rest, resist passive movement, and sometimes spasm or produce clonus (a rhythmic beating movement) without any conscious effort.
Spasticity is not the same as a contracture. A contracture is a lasting shortening of the muscle and surrounding tissue, and it often develops over time if spasticity is not managed. One of the goals of a good management plan is to keep the muscle long and the joints moving so contractures do not set in.
02 . The common causes
Where spasticity usually comes from
Spasticity is a symptom, not a condition in its own right. It is caused by damage to the parts of the nervous system that regulate muscle tone. The most common causes seen in Australian allied-health and rehabilitation settings include:
- Stroke. Spasticity affects a substantial share of stroke survivors, particularly in the arm and hand, and is one of the main reasons people lose function in the months after a stroke.
- Multiple sclerosis. Spasticity is one of the most commonly reported symptoms of multiple sclerosis, and it can change from day to day depending on heat, fatigue, and infection.
- Cerebral palsy. Spastic cerebral palsy is the most common form. It is present from infancy and affects how muscles develop, lengthen, and respond as a child grows.
- Spinal cord injury. Spasticity below the level of injury is very common, particularly once the initial phase of spinal shock has passed.
- Traumatic brain injury. Spasticity often emerges in the recovery phase and may be one of several factors limiting return to walking, transfers, and self-care.
- Hereditary spastic paraplegia and related conditions. Less common, but a progressive cause of lower-limb spasticity that benefits from the same multidisciplinary approach.
One useful thing to know is that spasticity can be made worse by things that have nothing to do with the muscle, such as constipation, a urinary tract infection, or a pressure sore. Sorting those out is often part of settling the tone. What spasticity looks like day to day depends on which muscles are affected and what you are trying to do with them. For some people it is mainly the calf and ankle. For others it is the hand and wrist. For others again it shows up most when transferring or trying to sleep.
03 . How it shows up
How spasticity affects everyday life
Spasticity does not just feel uncomfortable. Left unmanaged, it can drive a series of downstream problems that are worth recognising early:
- Movement and walking. Tight calf or hip muscles change how you load your foot and shift your weight, which often shows up as an altered walking pattern. If walking has changed, our companion guide on the long-term effects of poor gait patterns in chronic neurological conditions covers the joint, balance, and energy-cost effects in more detail.
- Transfers. Tight hip, knee, or calf muscles can make it hard to get in and out of a chair, a bed, or a wheelchair safely.
- Sleep. Spasms at night can wake you repeatedly or make it hard to find a comfortable position.
- Skin. Limited movement and difficult positioning raise the risk of pressure injuries, particularly for people who spend long periods sitting or lying.
- Pain and discomfort. Long-standing muscle tightness, joint loading, and posture changes can all contribute to ongoing pain.
- Everyday tasks. Hand and arm spasticity can make dressing, eating, and personal care slower and more tiring.
The aim of a good management plan is to keep these downstream effects from stacking up, while you and your team work on the underlying tone.
Spasticity is a symptom, not a verdict. With the right plan, most of the day-to-day effects can be managed.
04 . The plan
What a multidisciplinary management plan looks like
There is no single treatment that fixes spasticity. The evidence and Australian clinical guidelines point in the same direction: a multidisciplinary plan, built around your goals, that combines medical management with day-to-day allied-health work.
Medical management (your GP, Rehabilitation Physician, or Neurologist). Allied health does not prescribe medications. Your medical team may discuss options such as oral medications (for example baclofen, tizanidine, or dantrolene), focal botulinum toxin injections for spasticity in one area, or in selected cases an intrathecal baclofen pump. These are decisions for your GP or consultant. Our role is to coordinate with them and make sure the physical work supports whatever medical plan is in place.
Physiotherapy. Stretching programs (self-directed and assisted), strengthening of the muscles around a spastic joint, gait retraining, balance work, and splinting recommendations for joints such as the wrist or ankle. After a botulinum toxin injection there is a window while the medication is working, and the structured Physiotherapy that follows helps you put that window towards the movement goals you are working on. Learn more about our Physiotherapy service.
Exercise Physiology. Graded strength and conditioning, cardiovascular work that respects fatigue, and functional retraining for transfers, sit-to-stand, and walking. Exercise Physiologists are particularly useful for people who want to maintain or rebuild aerobic capacity alongside their stretching and mobility work. Learn more about our Exercise Physiology service.
Occupational Therapy. Everyday tasks, splinting for the hand and upper limb, equipment recommendations (standing frames, tilt tables, pressure-care seating), and home modifications. If spasticity is changing how you dress, cook, transfer, or move around your home, an Occupational Therapist can usually reshape the environment so the same task takes less effort. Learn more about our Occupational Therapy service.
For NDIS participants, the therapy work usually sits in the Improved Daily Living part of Capacity Building, where Physiotherapy, Exercise Physiology, and Occupational Therapy are normally drawn from. Equipment such as splints and seating may also be funded as assistive technology under Capital Supports. The line items in your plan show where this funding sits.
05 . Next steps
When to involve your team
A few signs that it is worth booking in with an allied-health team rather than waiting:
- Your tone, spasms, or clonus have changed recently and are starting to affect walking, transfers, or sleep.
- You have had a botulinum toxin injection in the last few weeks and you want to make the most of the window while the medication is working.
- Everyday tasks such as dressing, washing, or getting in and out of a chair are taking longer than they used to.
- Your equipment (splints, wheelchair, standing frame) no longer feels like it fits the way it did, or you have not had a review in over 12 months.
- Pain, skin issues, or poor sleep are starting to stack up alongside the spasticity itself.
Spasticity also changes over time. Conditions like multiple sclerosis, cerebral palsy in adulthood, and progressive forms of paraplegia move through phases, and what worked two years ago may not be the right fit now. A periodic review with the same team that knows your history is usually more useful than waiting until something is clearly wrong.
References
- Kheder and Nair, 2012. Spasticity: pathophysiology, evaluation and management. Practical Neurology, 12(5), 289-298. DOI: 10.1136/practneurol-2011-000155. (According to PubMed.)
- MS Australia. Spasticity and spasms. National peak body for multiple sclerosis in Australia.
- Stroke Foundation. Living Clinical Guidelines for Stroke Management.
