A case of coin-shaped headache. Portuguese Journal of Family Medicine and General Practice, [S. l.], v. 42, n. 1, p. 61–66, 2026. DOI: 10.32385/rpmgf.v42i1.14196. Disponível em: https://rpmgf.pt/ojs/index.php/rpmgf/article/view/14196. Acesso em: 17 apr. 2026.