Condition caused by neonatal withdrawal from substance exposure in utero
Withdrawal within first 24-48 hrs → fetal alcohol<unk> 
Withdrawal within 48-72 hrs → heroin
Withdrawal at 7-14 days → methadone
Incidence has quadrupled since 1999 from 1.5 per 1000 hospital births to 6.0 per 1000 in 2013
Polysubstance withdrawal must also be considered
Withdrawal within first 24-48 hrs → fetal alcohol<unk> 
Withdrawal within 48-72 hrs → heroin
Withdrawal at 7-14 days → methadone
Neonatal abstinence syndrome
Neonatal sepsis
Neonatal hypoglycemia
Hyperthyroidism/hypothyroidism
Non-neonatal hypoglycemia 
Hypocalcemia
Traumatic asphyxia
Hypoglycemia