Uncommon headache syndromes in the pediatric population.

Headache is one of the most common symptoms in children and adolescents, and headache syndromes are an important reason for medical consulting. According to the second edition of the International Classification of Headache Disorders, there are 196 possible headache diagnoses, of which 113 have been described in pediatric population. Herein, we focus on unusual pediatric headache syndromes. We group them as headaches with migraine features, short-duration headaches with autonomic features, short-duration headaches without autonomic features, and potentially ominous forms of headaches. Although rare as single entities, providers focusing on pediatric headaches certainly will face some of these headaches and need to be comfortable on the diagnostic approach.