There have been recent fluctuations in the incidence of attention-deficit/hyperactivity disorder (ADHD) among US adolescents and adults.

Though the condition always starts in childhood, about half of adults with it are not diagnosed until age 18 or older.

What leads to the 'good' and 'bad' phases of life? This developmental model explains why we have predictable ups and downs.

Allison Burk's teenage daughter struggled with uncontrolled emotions, a shrinking attention span and a growing tendency to ...

Israel has inflicted “serious and sometimes life-threatening danger” on pregnant and postpartum women and girls in Gaza over ...