Add Yahoo as a preferred source to see more of our stories on Google. New psychology research explains why nail-biting, procrastination and self-criticism may stem from the brain’s survival instincts.

Nail biting, medically called onychophagia, affects about 30% of people worldwide. This common habit often begins in childhood and is usually triggered by stress, anxiety, or boredom. Although many ...

Nail biting is common in childhood, but it can still tug at your worry. Here is how to understand the behavior, support your child with compassion, and know when to call in backup.

Do you have a habit of biting your nails? Here's how it can increase the risk of infections, dental issues, and stomach problems. Check the list of diseases nail biting can cause and why quitting this ...

When body-focused repetitive behaviors (BFRBs) are discussed, the conditions that typically come to mind include trichotillomania (hair pulling) and excoriation disorder (skin picking). However, one ...