A new report from the Centers for Disease Control and Prevention reveals a staggering uptick in ADHD, or attention-deficit/hyperactivity disorder, diagnoses among American children. Calling ADHD an "expanding public health concern," researchers found that 1 in 9 children aged 3-17 had been diagnosed with the disorder, symptoms of which include trouble paying attention, overactivity and impulsive behaviors. The study, which appears in the Journal of Clinical Child & Adolescent Psychology, found that between 2016 and 2022, ADHD diagnoses among kids jumped by more than one million. Melissa Danielson, a statistician with the CDC's National Center on Birth Defects and Developmental Disabilities, attributes the increase to the mental toll of the pandemic. The report found that nearly 78% percent of children diagnosed with ADHD had at least one other diagnosed disorder. Common among these additional diagnoses were behavioral or conduct problems, anxiety, developmental delays, autism and/or depression. Meanwhile, an unrelated study found that between 2000 and 2021, the number of calls to US poison control centers for children's ADHD medication errors jumped 300%, and a University of Michigan study revealed that 1 in 4 middle and high school students are abusing stimulants prescribed for ADHD. Additionally, ADHD medications are known to cause side effects like headache and loss of appetite.