My daughter woke up with this huge

Blood blisters strike without warning.

One moment your skin looks normal, the next there’s a dark, swollen bubble that looks frighteningly serious.

Panic rises. Is it dangerous? Is it cancer? Should you pop it, drain it, or rush to the ER?

That ominous dark bubble is usually your body’s quick, efficient response to sudden trauma.

When small blood vessels under the skin rupture from pressure or friction, blood leaks out but gets trapped beneath an intact top layer of skin.

The result is a tender, maroon or purplish blister that often appears on fingers, palms, toes, feet, or even inside the mouth after a bite or dental work.