TAKE PART IN RESEARCH
Research explained in everyday language. Explore what teams around the world are trying to learn, who can take part and how to get in touch.
See worldwide coverage and update dates ↓Studies with early results appear under “Results reported” even if recruitment continues.
Registry records retrieved 2026-10-13 (UTC). Individual records may have older updates. Recruitment and eligibility must be confirmed with the study team.
A location is a starting point. Ask the team whether that site is accepting people and whether you can take part from where you live.
Introductions are AI-written from the registry in everyday language and have not been independently checked by a clinician. Open any study for its full name, original description and participation rules.
Studies name Parkinson’s or a related condition. Some include other conditions or healthy volunteers. Country filters use sites with matching or unreported status. A country recorded by WHO does not confirm an open local site.
Brazil
This study investigates exercise programmes across several conditions and follows changes in health.
Testing a treatment or activity
Age range not listed · Ask the team who can join
Brazil
Researchers are investigating rehabilitation techniques for people with Parkinson's.
Testing a treatment or activity
Ages 50y to 80y · Ask the team who can join
Brazil
This study compares trazodone with a placebo to investigate its effects on Parkinson's movement difficulties.
Testing a treatment or activity
Age range not listed · Ask the team who can join
Brazil
Researchers are comparing programmes to investigate sleep and thinking in Parkinson's.
Testing a treatment or activity
Ages 50y to 85y · Ask the team who can join
Brazil
This study investigates a different way of practising walking for people with Parkinson's.
Testing a treatment or activity
Age range not listed · Ask the team who can join
Brazil
Researchers are comparing approaches for posture control and quality of life in Parkinson's.
Testing a treatment or activity
Ages 50y to 80y · Ask the team who can join
Brazil
This study tests whether combining stationary cycling and breathing training changes outcomes in Parkinson's.
Testing a treatment or activity
Ages 50y to 80y · Ask the team who can join
Brazil
Researchers are comparing mental practice approaches alongside physiotherapy and measuring mobility and fall risk.
Testing a treatment or activity
Ages 18y to 80y · Ask the team who can join
Tunisia
A pilot study investigates whether marjoram tea changes markers of cell stress in blood. Benefits for symptoms are not established.
Testing a treatment or activity
Ages 18 year(s) to 44 year(s) · Ask the team who can join
No potentially open locations reported
Researchers are studying thinking and behaviour when deep brain stimulation adjusts in response to brain signals.
Learning by observing or collecting information
Ages 18 to 99 · Ask the team who can join
Netherlands
Researchers are testing lifestyle support delivered remotely for people with Parkinson's who have heart and circulation risk factors.
Learning by observing or collecting information
Ages 18 to 99 · Ask the team who can join
Netherlands
Researchers are testing an implant that stimulates the inner ear's balance system to investigate walking difficulties.
Testing a treatment or activity
Ages 18 to 99 · Ask the team who can join
Netherlands
Researchers are collecting saliva and measuring chewing and smell to investigate possible signs of neurological disease.
Learning by observing or collecting information
Ages 18 to 99 · Ask the team who can join
Netherlands
Researchers are comparing lifetime pesticide exposure in people with and without Parkinson's to investigate possible associations.
Learning by observing or collecting information
Ages 18 to 99 · Ask the team who can join
Netherlands
This pilot study explores visual art, flexible thinking and the brain chemical dopamine in Parkinson's.
Learning by observing or collecting information
Ages 18 to 99 · Ask the team who can join
Netherlands
Researchers are collecting samples and health information to investigate how accurately blood tests might identify Parkinson's.
Learning by observing or collecting information
Ages 18 to 99 · Ask the team who can join
Netherlands
Researchers are investigating how Parkinson's affects judgements about control over events, using tasks and brain measurements.
Learning by observing or collecting information
Ages 18 to 99 · Ask the team who can join
Netherlands
This study investigates grinding or clenching teeth and jaw-joint difficulties in Parkinson's.
Learning by observing or collecting information
Ages 18 to 99 · Ask the team who can join
Netherlands
This study tests a structured approach designed to help people with Parkinson's learn tasks while avoiding errors.
Testing a treatment or activity
Ages 18 to 99 · Ask the team who can join
Netherlands
This study uses high-strength magnetic resonance imaging to follow the course of Parkinson's.
Learning by observing or collecting information
Ages 18 to 99 · Ask the team who can join
WORLDWIDE COVERAGE
Studies are imported from ClinicalTrials.gov, WHO’s international collection and the European CTIS registry. WHO brings together national and regional registries, including records from Asia, Africa and Latin America. Recruiting and upcoming listings have English introductions; older records awaiting an introduction show their registry title.
We aim for broad worldwide coverage, but no registry includes every study. Unregistered studies, reporting delays and missing translations can leave gaps. A missing paper does not mean that no results exist.
Import available
Last complete check: 2026-10-13
4689 related source records before matching duplicates
Import available
Last complete check: 2026-10-13
4384 related source records before matching duplicates
Import available
Last complete check: 2026-10-13
73 related source records before matching duplicates
These dates show when WHO processed a registry’s data, not when every study was last updated. WHO’s “not recruiting” label does not distinguish planned, completed and follow-up studies.
Source attribution: WHO ICTRP ↗. The source records and processing dates remain available on each study page. English registration fields are preferred; original descriptions may include local-language material. Registry imports and paper matching run daily. New or changed descriptions enter an editorial queue.