National Center For Complementary And Integrative Health (nccih)

This Phase 2 trial tests whether a single dose of (2R,6R)-hydroxynorketamine (HNK), a non-addictive ketamine metabolite, can reduce acute pain in 92 healthy adults. Participants receive either HNK or a placebo intravenously and undergo pain tests, brain scans, and safety monitori…

This study screens healthy volunteers and people with pain to see if they qualify for future pain research at the National Center for Complementary and Integrative Health. Screening includes medical history, physical exam, questionnaires, and optional sensory testing. No treatmen…

This study compares nerve function in people with PIEZO2 Deficiency Syndrome (a rare genetic condition that reduces touch and pain sensation) to healthy volunteers. Researchers use thin needles to record nerve activity while applying various sensations like brushing, heat, and pi…

This pilot study will test a new method to see how two pain medicines, naproxen and pregabalin, work in healthy adults. Up to 25 participants will receive each medicine and a placebo in random order. They will undergo several short, controlled pain tests, like a cold water hand b…