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.
Italy
Researchers investigate levodopa and deep brain stimulation for freezing of gait, when people with Parkinson’s briefly struggle to take the next step.
Testing a treatment or activity
Ages 18 years to 80 years · Does not accept healthy volunteers
China
Researchers investigate acupuncture in people who have Parkinson’s and chronic appendicitis, or ongoing inflammation of the appendix.
Testing a treatment or activity
Ages 40 years to 70 years · Does not accept healthy volunteers
France
Researchers study how people with Parkinson’s adapt their movements to unexpected visual or physical changes, alongside recordings of brain activity.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
United Kingdom
Researchers offer genetic testing and remote assessments to people with Parkinson’s to help identify opportunities for future research participation.
Learning by observing or collecting information
Ages 18 years to 90 years · Ask the team who can join
Italy
Researchers investigate robot-assisted rehabilitation for older people with Parkinson’s and follow participants after treatment to assess lasting changes.
Testing a treatment or activity
Age 65 years and over · Does not accept healthy volunteers
China
Researchers use brain scans to investigate changes in brain connections after implanted or magnetic stimulation in people with Parkinson’s and thinking difficulties.
Learning by observing or collecting information
Up to age 75 years · Does not accept healthy volunteers
Switzerland
Researchers test three weeks of sensor-supported hand training in people with Parkinson’s, multiple sclerosis or a previous stroke.
Testing a treatment or activity
Ages 18 years to 99 years · Also accepts healthy volunteers
Denmark
Researchers compare how people with Parkinson’s and healthy volunteers experience pain and discomfort during controlled pressure, temperature and chemical tests.
Testing a treatment or activity
Age range not listed · Also accepts healthy volunteers
Belgium
Researchers investigate patterns in the timing of steps and how people with Parkinson’s control their walking.
Learning by observing or collecting information
Ages 18 years to 99 years · Also accepts healthy volunteers
Belgium
Researchers study how people with Parkinson’s choose movement goals and adapt reaching movements when conditions change.
Learning by observing or collecting information
Ages 18 years to 99 years · Also accepts healthy volunteers
France
Researchers collect cerebrospinal fluid, the fluid surrounding the brain and spinal cord, to support research into conditions affecting thinking and memory.
Learning by observing or collecting information
Age range not listed · Does not accept healthy volunteers
Italy
Researchers measure substances in blood linked to nerve cells, their connections and inflammation at different stages of Parkinson’s.
Testing a treatment or activity
Ages 18 years to 80 years · Does not accept healthy volunteers
China
Researchers collect long-term information in China about Parkinson’s symptoms and possible measurements of how the condition changes.
Learning by observing or collecting information
Ages 30 years to 75 years · Also accepts healthy volunteers
Italy
Researchers follow quality of life, movement, thinking and behaviour after deep brain stimulation surgery performed using a frameless technique.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
Italy
Researchers investigate the superior cervical ganglion, a group of nerve cells in the upper neck, in Parkinson’s.
Testing a treatment or activity
Ages 30 years to 80 years · Does not accept healthy volunteers
Italy
Researchers study blood and fluid surrounding the brain and spinal cord in multiple sclerosis and comparison neurological conditions, including Parkinson’s.
Learning by observing or collecting information
Ages 18 years to 65 years · Does not accept healthy volunteers
Italy
Researchers use clinical assessments and measurements to develop a model predicting responses to robotic rehabilitation in neurological conditions.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
United States
Researchers investigate habits, beliefs and treatments associated with better quality of life and fewer symptoms in people with Parkinson’s.
Learning by observing or collecting information
Age 19 years and over · Does not accept healthy volunteers
United States
The Parkinson’s Foundation periodically surveys people with Parkinson’s, care partners and medical professionals about different aspects of life with the condition.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
Canada
Researchers investigate the practicality of online thinking tests for people with Parkinson’s.
Learning by observing or collecting information
Ages 45 years to 90 years · Also accepts healthy volunteers
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.