[Non-paroxysmal disorder in infant].

Non-epileptic paroxysmal disorders (PNED) are defined as events that mimic epileptic seizures. Its onset is usually sudden and short-lived, caused by brain dysfunction of various origins, but not due to excessive neuronal firing. Its incidence is higher than the epilepsy (10:1). They can occur at any age but are most common in children, especially in the first year of life. The immature nervous system in childhood causes in this period, paroxysmal manifestations that are very diverse and different from other ages. Normal and common paroxysmal disorders in children can mimic epileptic seizures. The first step is to establish a correct diagnosis, if the clinical paroxysmal episode is a seizure or PNED. Differential diagnosis is very broad, especially in the first ages. It's necessary a complete neurological examination in case of doubt and the study should be extended with complementary exams, investigations that in most cases will be normal/negative. In some of them, a genetic basis has been shown. Treatment options are limited and most PNED untreated have a favorable outcome.