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 2026-10-14 (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.
Japan
This study investigates whether a scanning tracer can help show alpha-synuclein deposits in the brain.
Testing a treatment or activity
Age 20years-old and over · Ask the team who can join
Japan
Researchers are testing nicotine patches and measuring thinking and simulator performance in Parkinson's.
Testing a treatment or activity
Age range not listed · Ask the team who can join
Japan
This study evaluates a self-completed smell questionnaire for people with Parkinson's.
Testing a treatment or activity
Age range not listed · Ask the team who can join
Japan
Researchers are comparing rehabilitation with and without tai chi for Parkinson's symptoms.
Testing a treatment or activity
Ages 40years-old to 85years-old · Ask the team who can join
Japan
This study investigates whether sound frequencies people cannot hear affect brain activity and thinking.
Testing a treatment or activity
Ages 20years-old to 90years-old · Ask the team who can join
Japan
Researchers are analysing proteins and genetic material in spinal fluid and urine to investigate neurological diseases.
Testing a treatment or activity
Age range not listed · Ask the team who can join
Japan
This study combines different scans to investigate the brain's dopamine system and structure.
Learning by observing or collecting information
Ages 30years-old to 90years-old · Ask the team who can join
Japan
Researchers are comparing active and simulated stimulation to investigate changes in Parkinson's symptoms.
Testing a treatment or activity
Ages 50years-old to 85years-old · Ask the team who can join
Japan
This study uses specialised scans to investigate spinal cord function in neurological diseases.
Testing a treatment or activity
Age 20years-old and over · Ask the team who can join
Japan
Researchers are comparing injections into an abdominal muscle with salt-water injections to investigate posture in Parkinson's.
Testing a treatment or activity
Age 20years-old and over · Ask the team who can join
Japan
This study investigates movement responses to levodopa in Parkinson's and related conditions under supervised testing.
Testing a treatment or activity
Age range not listed · Ask the team who can join
Japan
Researchers are testing lidocaine injections into muscles to investigate forward bending in Parkinson's.
Testing a treatment or activity
Ages 20years-old to 80years-old · Ask the team who can join
Japan
This study follows symptoms and convenience after changing from short-acting to extended-release pramipexole.
Testing a treatment or activity
Age 20years-old and over · Ask the team who can join
Japan
Researchers are comparing back-muscle and finger-movement exercises and measuring posture changes in Parkinson's.
Testing a treatment or activity
Age range not listed · Ask the team who can join
China
This study investigates a Schisandrin-based formula and measures symptoms and brain activity. Benefits remain to be established.
Testing a treatment or activity
Ages 20 to 80 · Ask the team who can join
United States
Researchers are comparing eating patterns during a 36-week study to investigate changes in symptoms.
Testing a treatment or activity
Age range not listed · Ask the team who can join
Iran
Researchers are studying group therapy designed around meaningful activities and daily life in Parkinson's.
Testing a treatment or activity
Ages 40 years to 80 years · Ask the team who can join
Iran
This study investigates exercise and a supplement in older women with Parkinson's, measuring daily activities and a biological marker.
Testing a treatment or activity
Ages 65 years to 80 years · Ask the team who can join
Iran
Researchers are testing whether famotidine changes involuntary movements associated with Parkinson's treatment.
Testing a treatment or activity
Age range not listed · Ask the team who can join
Iran
Researchers are testing fampridine alongside existing treatment and measuring changes in Parkinson's.
Testing a treatment or activity
Age range not listed · 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: 2026-10-14
4690 related source records before matching duplicates
Import available
Last complete check: 2026-10-14
4384 related source records before matching duplicates
Import available
Last complete check: 2026-10-14
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.