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.
Viral Infections: To answer the question as to how long viral infections last, one has to look at the different types of infections caused by viruses. Viral infections can be classified into three main groups: acute infections, chronic infections and latent infections. ...Read more. 73,000 doctors available.iral Infections: To answer the question as to how long viral infections last, one has to look at the different types of infections caused by viruses. Viral infections can be classified into three main groups: acute infections, chronic infections and latent infections. ...Read more. 73,000 doctors available.