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 Sinus Infection Last. Sinus infections are caused by inflammation that occurs in the sinus and nasal cavities. Typical symptoms of sinus infections include, but are not limited to intense headaches, nasal congestion, a runny nose, facial pain and even toothaches. In order to answer the question âhow long does sinus infection last?â doctors normally try to divide the illness into three broad categories.