Clinically Isolated Syndrome and Frontal Lobe Arteriovenous Malformation Presenting With Behavior Issues.

Prevalence of brain arteriovenous malformation ranges from 0.14% to 0.6% according to various estimates.

Narcolepsy in the pediatric population.

Narcolepsy is characterized by excessive daytime sleepiness, with or without cataplexy. Associated features include sleep paralysis, hypnagogic or hypnopompic hallucinations, and disturbed nocturnal sleep. Narcolepsy is strongly associated with the HLA DQB1*0602 allele, and its symptoms stem from destruction of hypocretin-secreting neurons in the hypothalamus.