This swelling and irritation of the blood vessels may thicken and weaken blood vessel walls. It can restrict blood flow and damage organs.
Update Date: 05.02.2025
Vasculitis involves swelling and irritation, called inflammation, of blood vessels. The inflammation can cause the walls of the blood vessels to thicken. This thickening can narrow the vessels. If the narrowing restricts blood flow, it can damage organs and tissues.
There are many types of vasculitis. Most of them are rare. Vasculitis might affect just one organ or several. The condition can be short-term or long lasting.
Vasculitis can affect anyone. But some types are more common among people in certain age groups. Some types may improve without treatment. Most types need treatment with medicines to control the inflammation and prevent flares.
Symptoms of most types of vasculitis can include:
Other symptoms depend on the parts of the body affected:
Make an appointment with your healthcare professional if you have symptoms that worry you. Some types of vasculitis get worse quickly. Early diagnosis is the key to getting treatment that works.
Experts don't know the exact cause of vasculitis. Some types are linked to a person's genes. Others result from the immune system attacking blood vessel cells by mistake. Causes of this immune system reaction may include:
Vasculitis can happen to anyone. Factors that may increase the risk of certain types include:
Vasculitis complications depend on the type of vasculitis and how bad it is. Complications also may be linked to side effects of the prescription medicines that treat the condition. Complications of vasculitis include:
Diagnosis starts with a medical history and a physical exam. You may have one or more tests and procedures. These can either diagnose vasculitis or rule out other conditions that cause some of the same symptoms. Tests and procedures might include:
Treatment aims to control the swelling and irritation, called inflammation. It also aims to manage the conditions that may be causing the vasculitis.
Most types of vasculitis can come back. This is called a flare. So your healthcare professional may need to follow you a long time after your symptoms go away.
A corticosteroid medicine, such as prednisone (Rayos), is the most common type of medicine prescribed to control the inflammation of vasculitis.
Corticosteroids can have bad side effects. The longer you take them, the worse the side effects may be. Side effects may include weight gain, diabetes and weakened bones. If you need a corticosteroid long-term, you get the lowest dose that will help.
Your healthcare professional may add other medicines to corticosteroids to control the inflammation. That way, you can lower the dose of corticosteroids more quickly. The medicine used depends on the type of vasculitis. Medicines may include methotrexate (Trexall), azathioprine (Imuran, Azasan), mycophenolate mofetil (CellCept), cyclophosphamide (Cytoxan), tocilizumab (Actemra) or rituximab (Rituxan).
Which medicines you need depend on the type of vasculitis you have, how bad it is, which organs are involved and any other medical problems that you have.
Sometimes, vasculitis causes a balloonlike bulge in the wall of a blood vessel. This is called an aneurysm. This bulge may need treatment with surgery to lower the risk of it breaking. Blocked arteries also may need surgical treatment to restore blood flow to the affected area.
Coping with the side effects of the medicines you take to treat your vasculitis might be one of the hardest things about living with the condition. Some of these tips might help:
Exercise most days of the week. Regular aerobic exercise, such as walking, can help prevent conditions that can be linked to taking corticosteroids. These include bone loss, high blood pressure and diabetes. Regular exercise also helps your heart and lungs.
Many people also find that exercise improves their mood and sense of well-being. If you're not used to exercising, start out and build up slowly. Your healthcare professional can help you plan an exercise program that's right for you.
Make an appointment with your main healthcare professional if you have symptoms that worry you. For vasculitis, you may need to see specialists. They might include:
To prepare for your appointment:
For vasculitis, some basic questions to ask include:
Your healthcare professional may ask:
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