Sauna for parkinson disease
Evidence review
Overview
In a Chinese study, many patients with Parkinson disease reported that motor symptoms are worse in winter and temporarily better after hot baths. In 9 temperature-sensitive patients, motor examination scores (bradykinesia, rigidity, posture and rest tremor) were better after a hyperthermic bath than on a day without one. The effect was acute and temporary, the sample was small and selected, and sauna itself has not been studied in Parkinson disease.
Key findings
- Hyperthermic bath, 9 patients: MDS-UPDRS III improved, including rigidity (p=.008), bradykinesia (p=.043), posture (p=.038) and rest tremor (p=.047) (Huang 2024)
- Survey of 203 patients: reported benefit from hot baths was associated with winter worsening of motor symptoms, OR 25.2 (95% CI 10.95-58.0) (Huang 2024)
Every study we reviewed
1 found benefit
Each study was checked on PubMed. The colored edge shows the direction of the result. The research library lists 5 studies on parkinson disease, across all heat and cold therapies, including case reports and older work not graded here.
Motor symptoms of Parkinson's disease are affected by temperature: A controlled pilot study.
Huang T et al. Brain Behav. 2024. PubMed 38376016 · DOI · Free full text
- Who
- Chinese patients with Parkinson disease reporting temperature-sensitive motor symptoms (9 completed); plus a cross-sectional survey of 203 patients
- What
- hyperthermic bath (hot-water immersion)
- Measured
- MDS-UPDRS part III motor score and modified Webster score without vs before and after bathing; seasonal variation of motor symptoms
- Result
- After hyperthermic baths, MDS-UPDRS III scores improved, including bradykinesia (p=.043), rigidity (p=.008), posture (p=.038) and rest tremor amplitude (p=.047). In the survey, reported improvement after hot baths was associated with seasonal (winter) worsening of motor symptoms (OR 25.2, 95% CI 10.95-58.0).
- Limitations
- 9 analyzed; acute, temporary effect; selected temperature-sensitive patients; no sham; hot-water immersion rather than sauna
Protocols used in the studies
Single hyperthermic (hot-water) baths, with motor scoring before and after; water temperature and duration are not given in the abstract. No sauna protocol has been studied.
What is still unknown
Whether sauna reproduces the hot-bath effect; duration of motor benefit; effect of repeated sessions; safety given orthostatic hypotension and falls; randomized trials.
Safety
Cautions for sauna in this condition
- Autonomic dysfunction and orthostatic hypotension are common in Parkinson disease; heat causes vasodilation, and post-bath orthostatic hypotension is documented in older adults on antihypertensive drugs (PMID 16871826). Rise slowly and use supervision.
- Gait and balance impairment increase fall risk on wet surfaces and steps.
- See general-safety.
For clinicians
Suggested rationale
A small controlled pilot (Huang 2024) found temporary improvement in motor examination scores after hyperthermic baths in temperature-sensitive patients with Parkinson disease; sauna has not been studied, and benefit beyond the acute session is unknown.
Suggested wording only. The treating clinician decides whether it reflects their clinical judgment for this patient.
Typical ICD-10 codes: G20. Examples only; the clinician assigns the code.
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