(Headache 2011;51:1267‐1273) Objective.— The aim of this prospective study is to assess the time lapse between the onset of recurring headache and the correct diagnosis in a cohort of pediatric patients attending an Italian children's headache center for the first time. Methods.— One hundred and one patients and parents, referred to the Pediatric Headache Centre of San Raffaele Hospital in Milan, Italy, underwent a semi‐structured interview to ascertain features of headache since onset (clinical and family history, presence of childhood periodic syndromes, previously undergone instrumental exams and specialists' examinations before the correct diagnosis, past and current treatment). All patients were evaluated by expert neurologists and their headache was classified according to the International Classification of Headache Disorders II (2004). Results.— The median time delay from the onset of the first episode of recurrent headache to definite diagnosis was 20 months (interquartile range 12 to 36 months). A correlation with younger age and a more delayed headache diagnosis was found (r Spearman = 0.25; P = .039). An association between diagnostic delay and positive family history (median 24 months 12 to 48 vs 12 6 to 24; P = .014) or female gender (median 18 months 12 to 42 vs 12 5 to 30; P trend = .070) was also evident. Notably, 76 out of 101 patients referred to our Center received an appropriate diagnosis according to International Classification of Headache Disorders II at the time of our visit only. Of note, up to 21% of this group were previously misdiagnosed (for epilepsy 43%, sinusitis 38%, or other diseases 19%), a fact that contributed to a longer time of clinical assessment (median 39 months) before reaching a correct diagnosis. The other group of 80 patients (79%) did not receive a specific diagnosis and treatment, and were not studied until their symptom became chronic and disabling. Conclusion.— Pediatric headache is still under‐diagnosed and not adequately considered as a health problem in the medical community as well as social settings. There is a need for educational programs regarding headache involving not only general practitioners, pediatricians, and neurologists, but also the general population. These are desirable in order to raise awareness of such a condition and, accordingly, treat children accurately.