A new Food and Drug Administration-approved treatment for non-cancerous skin growths, ESKATA, could be a game changer.

Seborrheic keratoses (SKs) — raised growths that look a bit like irregular, waxy moles or warts — affect as many as 83 million Americans, according to one 2015 study. That would make it more common than acne, rosacea and psoriasis…combined.

For something so common, we don’t really know what causes the growths that can appear on the face, neck, back, chest, and stomach, according to the American Academy of Dermatology.