If you pop or try to drain a blood blister, harmful germs and bacteria can get into the wound and cause an infection. It also slows down the healing time.
Blood blisters can make your skin feel warm and tender to the touch, so pain relievers can really help.
If the area is itchy, lay a cool wet cloth on your skin or soak in a cool bath.
Alternatively, you could use petroleum jelly, which acts as a barrier and prevents the bandage from sticking to the blister. [6] X Research source
Place a donut-shaped piece of moleskin around the blister before you put on the bandage if the blister is in a spot that will have things rub up against it.
Try to stay off of your blood blister so you’re not putting pressure on it, which could cause it to burst. If your blood blister is on your feet, elevate your feet whenever possible.
To treat an infection, your doctor might prescribe oral antibiotics. For a more serious infection, they may use intravenous antibiotics.
Most blood blisters form within a few minutes of getting your skin caught or pinched.
