Multiple system atrophy (MSA) is a degenerative neurological disorder. MSA is associated with the degeneration of nerve cells in specific areas of the brain.he cause of MSA is not conclusively known and no specific risk factors have been identified, although research indicates that a prion form of the alpha-synuclein protein may be the cause of the disease. Around 55% of cases occur in men, with typical age of onset in the late 50s to early 60s.
When diagnosed with a viral infection expect the infection to last 7 to 10 days unless the virus is specifically identified as one that can cause a longer infection period. slide 4 of 4.
How Long Does It Last? Most cases of acute bronchitis last between 3 and 10 days. However, the cough can linger for several weeks, even after the infection that caused it is gone. If your cough lasts for more than a month to six weeks after diagnosis, contact your health care provider.