Plain-English translation of NCT03952624 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
This research study is designed to deeply understand fatigue — not just measure how tired someone feels, but explore what's actually happening in the body and brain. Researchers want to collect detailed information from people experiencing significant fatigue (whether from a known disease or unexplained) as well as from healthy volunteers, so they can figure out whether fatigue is the same condition across different diseases or if there are different types of fatigue that need different approaches.
Many people experience severe, life-changing fatigue, but doctors still don't fully understand why it happens or how it differs from one person to the next. This study exists to map out the different ways fatigue shows up and what might be driving it — information that could eventually help doctors diagnose and treat it better.
You would start with a phone screening to see if you're a good fit, then come to the National Institutes of Health for an in-person visit. Depending on which part of the study you're in, you might complete questionnaires about your fatigue, have blood drawn, take cognitive or physical tests, and possibly have a brain scan using an MRI machine. The study is exploratory, meaning it's focused on gathering detailed information rather than testing a specific new drug or treatment.
AI-generated summary from trial data · Jul 14, 2026 · Not medical advice
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