Attention deficit hyperactivity disorder or ADHD often starts in early childhood. But an estimated 4% of adults have the condition—and many of them don't even realize it.

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15 Signs You May Have Adult ADHD

About 4% of adults have attention deficit hyperactivity disorder (ADHD), and many others have never been diagnosed. (About half of kids with ADHD still have it in adulthood.) Here are 15 signs of adult ADHD.
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A Bystander Had the Perfect Response to This Preschooler's ADHD Tantrum

One mom expected rage from fellow shoppers when her child began to act out in a Wal-Mart. What happened instead surprised her—and inspired a Facebook post on stress and compassion that has since gone viral.