Conditions affecting the blood vessels are very serious. Damaged arteries can ultimately affect your brain, heart, and other vital organs.
The most common complications of PAN include:
• a heart attack
• a stroke
• severe intestinal damage
• kidney failure
Because PAN is a rare disease, accurate statistics on overall outcome are only approximate. On average, after 5 years of illness, over 80% of people have survived the effects of PAN. How people with PAN do is strongly related to the severity of their illness. Although PAN can be a sudden and serious illness, many people with PAN do extremely well.
The best opportunity to minimize damage comes when treatment has been promptly initiated and is carefully monitored by a physician who is knowledgeable about PAN.
After achieving remission, it is possible for the PAN to recur (referred to as a "relapse"). Estimates of the rate of relapse for PAN vary widely but range from 10 to 40%. Such relapses may be similar to what the person experienced at the time of their diagnosis or they may be different. The likelihood of experiencing a severe relapse can be minimized by promptly reporting any new symptoms to a physician, regular physician follow-up, and ongoing monitoring with laboratory tests.
Courtesy: Health Line