Angina bullosa haemorrhagica (ABH) is a type of blood blister that affects older adults. ABH mainly forms on the soft palate (the muscular part of the roof of the mouth) when the mouth is injured ...

While blood blisters often develop due to injury, certain medications and conditions can cause them, too. A blood blister can develop on different parts of the body. The most common spots include: [1] ...

As with friction blisters, you should leave blood blisters unpopped in most cases. If you have a large or painful blood blister that you suspect is at risk of bursting on its own, visit a ...

Medically reviewed by Brian T. Luong, DMD Several things may cause dark black spots on the tongue, including a benign condition called hairy tongue, some medications, and some health conditions.