Finding a bump on your skin can be seriously frustrating… and scary. How the heck are you supposed to cover that thing up — and will it ever go away?! Plus, with all the warnings you hear about skin cancer (more than four million people in the U.S. are diagnosed with the most common kind, basal cell carcinoma, every year), discovering a weird spot...

If you have a skin growth that looks like a wart, you may have developed seborrheic keratosis. It’s a worrisome name, but take a deep breath — these lesions, sometimes called “the barnacles of aging,” are not dangerous. In fact, they are one of the most common skin conditions you can get as you age. Researchers estimate that more than 90% of adults over...