Sick or premature neonates are exposed to frequent painful and stressful procedures during their stay in neonatal intensive care units. Although neonates do feel pain and may have long term effects induced by painful experiences, prevention and treatment of neonatal pain is far from optimal in many units. An epidemiological study (EPIPPAIN) conducted in neonatal and pediatric intensive care units in France in 2005 showed that painful procedures were extremely frequent and that analgesics treatments varied a lot among units. Since many guidelines have been issued by international scientific societies to manage neonatal pain, one may expect that the prevention and treatment of neonatal pain has improved over the last 6 years.