TY - JOUR PY - 2014// TI - Prevalence of nocturnal frontal lobe epilepsy in the adult population of Bologna and Modena, Emilia-Romagna Region, Italy JO - Sleep A1 - Vignatelli, Luca A1 - Bisulli, Francesca A1 - Giovannini, Giada A1 - Licchetta, Laura A1 - Naldi, Ilaria A1 - Mostacci, Barbara A1 - Rubboli, Guido A1 - Provini, Federica A1 - Tinuper, Paolo A1 - Melett, Stefano SP - 479 EP - 485 VL - 38 IS - 3 N2 - STUDY OBJECTIVES: To estimate the prevalence of nocturnal frontal lobe epilepsy (NFLE) in the adults of two areas of the Emilia-Romagna region (northeast Italy) and to describe the clinical features from a population-based perspective. DESIGN: Population-based retrospective cohort study including adults with NFLE. SETTING: Two areas of the Emilia-Romagna region: the city of Bologna (330,901 adult residents) and five districts of the province of Modena (424,007). Prevalence day: December 31, 2010. PARTICIPANTS: Patients with NFLE collected from multiple databases of neurologic hub centers of the districts involved. Diagnostic criteria: clinical history of sleep related bizarre motor attacks and videopolysomnographic recording confirming the typical features of NFLE. Inclusion criteria for prevalence calculation: residence in one of the two geographic areas on the prevalence day and an "active" or "in remission with treatment" form of NFLE. MEASUREMENTS AND RESULTS: Six subjects from Bologna and eight from Modena were included. Crude prevalence (per 100,000 residents) was 1.8 (95% confidence interval 0.7-4.0) in Bologna and 1.9 (0.8-3.7) in Modena. Similarly, the main clinical features were consistent: onset during adolescence (median age 11-13 y), mainly hyperkinetic seizures, nonlesional form in more than two-thirds of cases, an active form of epilepsy in more than two-thirds of cases. A family history of epilepsy was reported only for two patients. CONCLUSIONS: This epidemiologic study establishes that NFLE is a rare epileptic condition, fulfilling the definition for rare disease. Because of methodological limitations of our case ascertainment, the estimates we disclose must be considered the minimum prevalence. © 2014 Associated Professional Sleep Societies, LLC. LA - en SN - 0161-8105 UR - http://dx.doi.org/ ID - ref1 ER -