HCR Update from Mark Sanna: A study published this week in the Journal of American Medicine Pediatric reports that children whose mothers used acetaminophen during pregnancy were at higher risk for receiving a hospital diagnosis of hyperkinetic disorders or having attention deficit hyperactivity disorder-like behaviors at age 7 years. Stronger associations were observed with use in more than 1 trimester during pregnancy, and exposure response trends were found with increasing frequency of acetaminophen use during gestation for all outcomes (ie, HKD diagnosis, ADHD medication use, and ADHD-like behaviors.