Medically reviewed by Katlein Franca, MD Key Takeaways A wart is a hard bump caused by a virus and can be removed with over-the-counter products.  A skin tag is a soft flap of skin usually found in ...

Warts are stubborn, contagious, and often misunderstood. Luke Johnson, MD, a dermatologist with University of Utah Health, shares what actually helps—from over-the-counter salicylic acid to in-office ...