One syndrome is "Benign idiopathic neonatal seizures" (BINS) and the other is "Benign familial neonatal seizures" (BFNS). Both syndromes usually happen in infants in the neonatal period, which is the first 28 days after birth. In most cases, the first seizure happens within the first few days after birth. However, some infants may have their first seizure later in the neonatal period, or even months after the neonatal period. The last seizure usually happens while the infant is still in the neonatal period, but seizures may continue after this time.