Recent research confirms a dramatic increase in the use of atypical antipsychotics with subsequent side-effects including obesity, which is already a major health issue. It is prudent to pursue nonpharmacological measures first, such as behavioural modifications and ensuring good sleep hygiene (such as eliminating daytime napping and shutting off electronics an hour before bedtime). If these interventions are not successful, then consider short-term use of melatonin.
Sources:
Ferracioli-Oda E, et al. Meta-analysis: melatonin for the treatment of primary sleep disorders. PLoS One. 2013 May 17;8(5):e63773. PMID: 23691095.
Mindell JA, et al. A clinical guide to pediatric sleep: Diagnosis and management of sleep problems. 2nd edition. Philadelphia (PA): Lippincott Williams & Wilkins; 2010.
Morgenthaler TI, et al. Practice parameters for behavioral treatment of bedtime problems and night wakings in infants and young children: an American Academy of Sleep Medicine report. Sleep. 2006;(29)10:1277–81. PMID: 17068980.
Owens JA, et al. Pharmacologic treatment of pediatric insomnia. Child and Adolescent Psychiatric Clinics of North America. 2009 Oct;18(4):1001-16. PMID: 19836701.
Stepanski EJ, et al. Use of sleep hygiene in the treatment of insomnia. Sleep Med Rev. 2003 Jun;7(3):215-25. PMID: 12927121.