Neonatal withdrawal syndrome, Michigan, 2000-2009.

Background: Neonatal withdrawal syndrome, which is associated most frequently with opioid use in pregnancy, is an emerging public health concern, with recent studies documenting an increase in the rate of U.S. infants diagnosed.

A 9-state analysis of designer stimulant, "bath salt," hospital visits reported to poison control centers.

Study Objective: A new generation of designer stimulants marketed as "bath salts" emerged in late 2010. The goal is to describe the epidemiologic emergence of designer stimulants in 9 states in the Midwest.

Methods: A retrospective review of the National Poison Data System was performed between November 1, 2010, and November 30, 2011.