Zwergal, Rachel-Maria ORCID: 0009-0006-5083-6182; Filippopulos, Filipp ORCID: 0000-0002-2649-653X; Straube, Andreas; Wühr, Max ORCID: 0000-0001-5115-3777; Zwergal, Andreas ORCID: 0000-0002-3839-8398 (2026): A rare case of secondary paroxysmal hemicrania caused by a T1 nerve root schwannoma. Pain Reports, 11 (2): e1404. ISSN 2471-2531