AUTHOR=Yao Lilian , Subramaniam Kavya , Raja Katherine M. , Arunachalam Abi , Tran Aubrey , Pandey Tripti , Ravishankar Sahana , Suggala Sahan , Hendrickson Caitlyn , Maxwell Andrew J. TITLE=Association of postural orthostatic tachycardia syndrome, hypermobility spectrum disorders, and mast cell activation syndrome in young patients; prevalence, overlap and response to therapy depends on the definition JOURNAL=Frontiers in Neurology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2025.1513199 DOI=10.3389/fneur.2025.1513199 ISSN=1664-2295