RESUMEN
BACKGROUND: The prevalence of pregnancy-associated insomnia is high. Although insomnia may flow from normal physiologic features of pregnancy, it may also be an early warning sign of a relapse, or a trigger for a relapse, of a psychiatric illness. Those at risk for psychiatric illnesses may require medications as well as behavioral and psychotherapeutic interventions, to prevent relapse in the perinatal period. Unfortunately, few reviews of psychotropics used to treat pregnancy-related sleep disorders exist. OBJECTIVE: We discuss issues related to sleep and sleep disorders in pregnancy in the context of co-morbid psychiatric illness, and review the literature on the commonly-used medications (e.g., benzodiazepines, sedative-hypnotics, antihistamines, trazodone, and melatonin) for insomnia during pregnancy.