Atypical Hypersensitivity Reaction to Botulinum Toxin Injection. Headache Medicine, [S. l.], v. 14, n. 2, p. 108–111, 2023. DOI: 10.48208/HeadacheMed.2023.21. Disponível em: https://headachemedicine.com.br/hm/article/view/775. Acesso em: 22 jan. 2026.