An uncommon cause of headache

Mariana Sousa-Santos, Pediatrics Department, Centro Hospitalar de Leiria, Leiria, Portugal
Ester Pereira, Pediatrics Department, Centro Hospitalar de Leiria, Leiria, Portugal
José A. Costa, Neurosurgery Service, Hospital Pediátrico, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
Fernanda Rodrigues, Emergency Service and Infectious Diseases Unit, Hospital Pediátrico, Centro Hospitalar e Universitário de Coimbra, Coimbra. Portugal