Blood blisters are similar to friction blisters, but the fluid is red, purplish, or dark in color. Learn how to treat blood blisters on your fingers, mouth, lip, and foot. It’s best to leave ...

A blood blister is a raised section of skin filled with blood. Possible causes include pinching the skin, lifting heavy weights, repeated rubbing, minor trauma, and more. In many cases ...

As blood trapped under the skin ages, the blister darkens, turning dark red, purple, or even black, says Dr. Chacon. This color change is part of the healing process as the body reabsorbs the blood.

Blood blisters can appear in the mouth due to injury, oral herpes, stress, and oral cancer. Learn more about the causes, home remedies, prevention, and when to consult a doctor.

Blood vessels break, the lower layers of the skin get damaged, and blood pools, forming a blister. • Heat blisters can form after a burn or sunburn, Dr. Patel says, and blisters can occur when ...

You should also leave small blood blisters intact, too. Otherwise, you risk getting bacteria in your bloodstream. Cover it up so the swelling goes down, then try to fix the problem that caused it.

You may be tempted to pop a blister, particularly one that's itchy or painful. But in many cases, the fluid that accumulates under a blister (and makes you want to pop it) aids healing. So, the ...

Other symptoms from swallowing blister beetles include: Swelling in your lips, nose, and throat Difficulty swallowing Abdominal pain Vomiting Blood in your urine Animals can also develop severe ...