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.
1 Generally, someone who has a MRSA infection stays infected for just under 10 days if they are treated by a doctor although many factors are involved and this duration can vary from person to person.
1 A sore can be infectious for as long as it is weeping. Usually it has stopped being infectious about 24 hours after treatment with an antibiotic has been started, and healing has begun.  The germs can also be spread from other parts of the body that do not appear to be affected, e.g. from a runny nose.