Received: 6 February 2021
Accepted: 31 July 2021
First Online: 21 August 2021
: The study was performed in accordance with the Declaration of Helsinki and approved by the ethical committee of Menoufiya Faculty of Medicine in December, 2015. Committee’s reference number is not applicable. Written Informed consent was obtained from parents, and informed assent was obtained from the children before the collection of data. Data and headache diaries for patients were obtained from the patients or their parents
: Not applicable
: The authors declare that they have no competing interests.