A lump under the chin may be hard or soft, and tender or painless. This is not always a cause for concern. Learn about causes and when to see a doctor.
Eyebrow twitching may result from everyday factors, such as caffeine, or disorders such as hemifacial spasm. Learn about causes and when to see a doctor.
This is just one of many masturbation-related myths. Learn more about this and other myths, the benefits of masturbation, and what really causes hair loss.
What causes a toenail to fall off, and what do you do when this happens? We look at causes, recovery time, removing the nail, and when to see a doctor.