1. Which specialists treat MPA?
A rheumatologist treats MPA. Specialists like nephrologists, gastroenterologists and pulmonologists treat MPA depending on which organ is affected.
2. What happens when a blood vessel is inflamed?
Inflammation of blood vessels could have two consequences:
The blood vessel could be narrowed to such an extent that it obstructs the flow of blood.
The blood vessel wall could thin out and form an outpouching called an aneurysm. The aneurysm may burst leading to fatal bleeding.