WHAT CAUSES THEM?
Capillaries burst for a variety of reasons, most commonly, genetics, sun damage, rosacea, trauma to the skin, and aging. “That long list just proves that we don’t really know why they happen in any one case,” Dr. Schwartz says. If your parents have a ruddy complexion (caused by more vessels closer to the skin), it’s probable that you will too. Years of sun exposure along with that can cause capillary damage: “As more ultraviolet rays pound the dermis, elastin fiber weaken and blood vessels migrate closer to the skin, becoming more superficial, which in turn makes them more visible,” explains Bobby Buka, MD, board certified dermatologist, founder of Bobby Buka Dermatology, and Assistant Professor at Mount Sinai School of Medicine.