Inability to regulate your body temperature is common in Parkinson’s.

Helpful strategies, like staying hydrated, dressing in layers, and planning around hot weather mean you can stay safer and more comfortable.

Understanding temperature dysregulation in Parkinson’s

Parkinson’s affects the autonomic nervous system, the part of the body that controls automatic functions like:

  • Sweat production, which is important for cooling the body
  • Blood vessel control, which helps release or conserve heat
  • Muscle activity, which can create extra heat when muscles tighten or shake
  • When these systems don’t work smoothly, the body struggles to keep a stable temperature.

Temperature swings can affect comfort, sleep, and daily activities. Heat sensitivity, in particular, can make symptoms like stiffness, slowness, or fatigue feel more intense. For some, exposure to heat or cold can trigger falls, fainting, dehydration, or medical emergencies. Helpful strategies, like staying hydrated, dressing in layers, and planning around hot weather mean you can stay safer and more comfortable.

People with Parkinson’s may notice:

  • Feeling too hot or too cold even when others feel fine
  • Sweating too much (hyperhidrosis) or not sweating enough (hypohidrosis), especially during everyday activities
  • Becoming overheated more easily, which can make other Parkinson’s symptoms feel worse
  • Trouble cooling down in warm weather or warming up in cold weather.

These changes can show up early, even before movement symptoms appear, and they often continue throughout the condition.

Why it happens

Parkinson’s can interfere with the brain pathways that help regulate temperature. This affects:

  • Sweat production, which is important for cooling the body
  • Blood vessel control, which helps release or conserve heat
  • Muscle activity, which can create extra heat when muscles tighten or shake

When these systems don’t work smoothly, the body struggles to keep a stable temperature.

Treatments & management options for thermodysregulation in Parkinson’s

Thermodysregulation, trouble controlling body temperature, is a common non‑motor symptom of Parkinson’s. While there is no single treatment that “fixes” it, there are several strategies and supports that can make these temperature swings easier to manage.

Adjusting Parkinson’s Medications
Some temperature problems are linked to changes in movement symptoms, such as tremor or rigidity, which can increase body heat. Doctors may adjust Parkinson’s medications to help reduce these fluctuations.
This must always be done by a clinician, as medication timing and dosage can affect both motor and non‑motor symptoms.

Managing Excessive Sweating (Hyperhidrosis)
People who sweat too much (hyperhidrosis) may benefit from:

  • Topical treatments such as antiperspirants designed for medical use
  • Oral medications that reduce sweating (prescribed by a doctor)
  • Botulinum toxin injections for severe sweating in specific areas like the underarms or hands
  • These treatments aim to reduce discomfort and prevent overheating.

Supporting Reduced Sweating (Hypohidrosis)
Some people with Parkinson’s sweat too little, making it hard to cool down. Helpful strategies include:

  • Staying in cool, well‑ventilated environments
  • Using cooling towels, fans, or misting sprays
  • Wearing lightweight, breathable clothing
  • Taking frequent breaks during activity

These approaches help the body release heat more effectively.

Hydration & nutrition
Staying hydrated is essential for temperature control. Dehydration makes it harder for the body to cool down and can worsen dizziness or low blood pressure—issues already common in Parkinson’s.

Environmental & lifestyle strategies
Simple daily adjustments can make a big difference:

  • Dressing in layers to adjust quickly to temperature changes
  • Avoiding outdoor activity during the hottest part of the day
  • Using air conditioning or portable cooling devices
  • Taking warm showers or using heated clothing in cold weather

These strategies help people stay comfortable and prevent sudden temperature swings.

Treating underlying autonomic symptoms
Thermodysregulation is often linked to autonomic nervous system changes. Managing related symptoms, like low blood pressure, sleep problems, or anxiety, can indirectly improve temperature control. This may involve:

  • Medication adjustments
  • Physical therapy
  • Sleep and stress‑management strategies

Working With Health Professionals
A neurologist, Parkinson’s nurse, or autonomic specialist can help identify the specific type of thermodysregulation and recommend tailored strategies. Occupational therapists can also help with home modifications and cooling or warming tools.

  • A 2023 review reports that people with Parkinson’s frequently experience impaired sweating, altered heat loss, and difficulty maintaining stable core temperature due to autonomic nervous system changes.
  • A 2024 study found clear evidence that people with Parkinson’s experience increased heat sensitivity, and that heat exposure can worsen symptoms such as slowness, tremor, and fatigue.
  • A controlled pilot study showed that motor symptoms vary with ambient temperature, demonstrating measurable changes in movement performance when temperatures shift.
  • Scientific reviews note that Parkinson’s affects the brain circuits responsible for sweating, vasomotor control, and shivering, leading to dysregulated heat production and heat loss response.

How do I access supports?

Why heating & cooling are medical needs

Because of this physiological impairment, active heating or cooling becomes a medical requirement, not a lifestyle choice. Air conditioning, fans, heaters, and maintaining a stable indoor temperature are often essential to:

  • manage symptoms
  • prevent complications
  • remain safe at home
  • avoid hospitalisation.

This leads to higher-than-average electricity usage, especially during extreme weather, a growing issue as Australia experiences more frequent heatwaves.

Energy subsidies & concessions

If you live with Parkinson’s and struggle to self-regulate body temperature, many Australian states and territories offer energy cost support.

This usually requires:

  • holding an eligible concession card (e.g., Pensioner Concession Card, Health Care Card, DVA Gold Card)
  • a medical certificate from your GP or neurologist confirming your inability to regulate body temperature and the need for heating/cooling at home.

States with targeted medical cooling/heating support

Western Australia leads the country with a Thermoregulatory Dysfunction Energy Subsidy, providing a substantial annual payment for medically certified temperature regulation impairment.

Victoria recognises Parkinson’s as a pre-approved condition under its Medical Cooling Concession, offering electricity discounts during summer.

New South Wales, Queensland, South Australia, and Tasmania provide medical heating and/or cooling concessions or rebates, usually requiring:

  • an eligible concession card
  • certification from a GP or neurologist confirming medical need

ACT & Northern Territory at present, do not have equivalent standalone medical temperature regulation schemes. Residents must rely on general concessions or hardship programs, which may not adequately reflect the medical reality of Parkinson’s-related temperature dysfunction.

References

APDA (2023) The Reasons Behind Your Unexplained Temperature Changes https://www.apdaparkinson.org/article/temperature-dysregulation-and-parkinsons/

Chaudhuri, K. R., Healy, D. G., & Schapira, A. H. V. (2006). Non-motor symptoms of Parkinson’s disease: Diagnosis and management. The Lancet Neurology, 5(3), 235–245. https://doi.org/10.1016/S1474-4422(06)70373-8

Hunt, A.P., Pagnussat, A.S., Lehn, A. et al. Evidence of heat sensitivity in people with Parkinson’s disease. Int J Biometeorol 68, 1169–1178 (2024). https://doi.org/10.1007/s00484-024-02658-w

Kaufmann, H., Nahm, K., Purohit, D., & Wolfe, D. (2004). Autonomic failure as a complication of Parkinson’s disease. Movement Disorders, 19(4), 404–415. https://doi.org/10.1002/mds.20054

Magerkurth, C., Schnitzer, R., & Braune, S. (2005). Symptoms of autonomic dysfunction in Parkinson’s disease: Prevalence and impact on daily life. Clinical Autonomic Research, 15(2), 76–82. https://doi.org/10.1007/s10286-005-0253-6

Suh, J. H., Kim, J. H., & Kim, J. S. (2022). Thermoregulatory dysfunction in Parkinson’s disease: A systematic review. Journal of Movement Disorders, 15(1), 1–12. https://doi.org/10.14802/jmd.21152