In 10 years, diagnoses of attention deficit hyperactivity disorder (ADHD) increased 24% in southern California, according to a study published Monday in the journal JAMA Pediatrics.

Doctors reviewed anonymized medical records for children treated at the Kaiser Permanente Southern California physicians group between 2001 and 2010 - 842,830 children in all, according to the research.

Overall, in 2001, 2.5% of children aged 5 to 11 were diagnosed with ADHD, but that number crept up to 3.1% by 2010. FULL POST