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Pain clinical trials recruiting in the U.S.

203 studies for Pain are recruiting participants at sites across the United States.

Pain is a feeling triggered in the nervous system. You may feel it as a prick, tingle, sting, burn, or ache. Read about the causes and what can help.

Cities with the most studies

• Boston, MA15 studies
• Durham, NC14 studies
• Washington, DC13 studies
• New York City, NY13 studies
• New Haven, CT10 studies
• Houston, TX9 studies
• San Diego, CA9 studies
• Pittsburgh, PA9 studies
• Los Angeles, CA9 studies
• Chicago, IL8 studies
• Salt Lake City, UT8 studies
• Seattle, WA7 studies
• Atlanta, GA7 studies
• St. Louis, MO6 studies
• Baltimore, MD6 studies
• Gainesville, FL6 studies
• San Antonio, TX5 studies
• Cincinnati, OH5 studies
• Greenburgh, NY5 studies
• Philadelphia, PA5 studies
• Phoenix, AZ4 studies
• East Norwalk, CT4 studies
• Charleston, SC4 studies
• Birmingham, AL4 studies
• Tallahassee, FL4 studies
• New Rochelle, NY4 studies
• Edison, NJ4 studies
• Mountain View, CA4 studies
• Indianapolis, IN4 studies
• Minneapolis, MN3 studies
• Richmond, VA3 studies
• Staten Island, NY3 studies
• Cleveland, OH3 studies
• Charlottesville, VA3 studies
• Tulsa, OK3 studies
• Aurora, CO3 studies
• Austin, TX3 studies
• San Francisco, CA3 studies
• Miami, FL3 studies
• Orlando, FL3 studies

By state

• Alabama5 studies
• Arizona4 studies
• California30 studies
• Colorado7 studies
• Connecticut11 studies
• Delaware4 studies
• District of Columbia7 studies
• Florida21 studies
• Georgia11 studies
• Illinois11 studies
• Indiana4 studies
• Kansas3 studies
• Maryland13 studies
• Massachusetts16 studies
• Michigan6 studies
• Minnesota4 studies
• Missouri5 studies
• New Jersey9 studies
• New York27 studies
• North Carolina19 studies
• Ohio11 studies
• Oklahoma3 studies
• Oregon3 studies
• Pennsylvania12 studies
• South Carolina5 studies
• Tennessee6 studies
• Texas18 studies
• Utah8 studies
• Virginia7 studies
• Washington9 studies
• Wisconsin4 studies

Recently updated studies

From ClinicalTrials.gov, data retrieved Nov 15, 2026. Each study sets its own eligibility; the study team decides who can join.