Tweens who spend more time on screens have a higher likelihood of developing disruptive behavior disorders, with social media having an especially strong influence, a new UC San Francisco-led study ...

Roughly every month I receive an e-mail from a parent somewhere in the world asking for help with a child who is violent, angry or aggressive. Some people describe being physically beaten or having ...

Add Yahoo as a preferred source to see more of our stories on Google. Past age 50, men are much more likely to have REM sleep behavior disorder than women. Jose Luis Pelaez/Stone via Getty Images ...

This informational guide, part of POPSUGAR's Condition Center, lays out the realities of this health concern: what it is, what it can look like, and strategies that medical experts say are proven to ...

Oppositional defiant disorder (ODD) is a disruptive behavior disorder that emerges during childhood or adolescence and is characterized by persistent angry or irritable mood, unruly and argumentative ...

What is REM sleep disorder? REM sleep disorder (RBD) is a type of parasomnia associated with synucleinopathies ––a diverse group of neurodegenerative disorders thought to share a common pathologic ...

Source: Flickr, "Straight Jacket" by PhotoAteller, CC by 2.0 In my post Public Faces Vs. Private Thoughts: the Actor's Paradox, I wrote that patients with personality disorders are very adept at ...