---
title: Measure restless leg syndrome prevalence
nct_id: NCT06684782
status: RECRUITING
sponsor: Siriraj Hospital
study_type: OBSERVATIONAL
canonical_url: "https://parkinsonspathways.com/trial/NCT06684782"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT06684782"
last_fetched: "2026-05-10T14:07:24.345Z"
source: "Parkinson's Pathways (curated)"
---
# Measure restless leg syndrome prevalence

**Goal (in five words):** Measure restless leg syndrome prevalence

**Official Title:** Prevalence and Characteristics of Restless Leg Syndrome in Thai Patients With Parkinson's Disease

**Trial ID:** [NCT06684782](https://clinicaltrials.gov/study/NCT06684782)

## Key Facts

- **Status:** RECRUITING
- **Study Type:** OBSERVATIONAL
- **Sponsor:** Siriraj Hospital
- **Target Enrollment:** 310 participants
- **Start Date:** 2024-12-01
- **Completion Date:** 2026-10-31
- **Conditions:** Restless Legs Syndrome
- **Interventions:** Screening for symptoms of restless leg syndrome
- **Intervention Types:** OTHER

## Summary For Families

They aim to find how common restless legs syndrome is and what its typical symptoms and patterns look like in Thai people with Parkinson's. Participants will be screened for restless leg symptoms and clinical characteristics so researchers can map prevalence and how RLS relates to Parkinson's features, rather than testing a treatment. Adults 18 to 80 with Parkinson's who meet the UKPDS Brain Bank criteria and have an MMSE of 24 or higher are eligible, while people with atypical or secondary parkinsonism or other causes of RLS such as end-stage kidney disease, iron deficiency anemia, or pregnancy are excluded.

## Eligibility

- **Minimum age:** 18 Years
- **Maximum age:** 80 Years
- **Sex:** ALL

### Full Criteria

```
Inclusion Criteria:

* Patients with Parkinson's disease aged from 18 to 80 years who met the United Kingdom Parkinson's Disease Society (UKPDS) Brain Bank Diagnostic criteria.

Exclusion Criteria:

* Patients with atypical or secondary parkinsonism.
* Patients with Mini-mental status exam (MMSE) less than 24 of 30.
* Patients with secondary causes of restless leg syndrome including end-stage renal disease, iron deficiency anemia and pregnancy.
```

## Locations (2)

- Siriraj Hospital, Mahidol University, Bangkok, Bangkok, Thailand _(13.7540, 100.5014)_
  - Jindapa Srikajon, MD. — (CONTACT) — +66875932929 — jindapas@hotmail.com
- Siriraj Hospital, Mahidol University, Bangkok, Thailand, Thailand _(13.7540, 100.5014)_
  - Wattanachai Chotinaiwatttarakul, Doctor of Medicine — (CONTACT) — +6624197777 — exchot@yahoo.com

## Central Contacts

- Jindapa Srikajon, Doctor of Medicine — (CONTACT) — +66875932929 — jindapas@hotmail.com

---

*Canonical: https://parkinsonspathways.com/trial/NCT06684782*  
*HTML version: https://parkinsonspathways.com/trial/NCT06684782*  
*Source data: https://clinicaltrials.gov/study/NCT06684782*