In which patient groups is multiple system atrophy (MSA) most prevalent?

Updated: Oct 17, 2018
  • Author: André Diedrich, MD, PhD; Chief Editor: Selim R Benbadis, MD  more...
  • Print
Answer

MSA has been encountered in Caucasian, African, and Asian populations. In Western countries, MSA-P predominates, occurring in 66-82% of patients. In Eastern countries (e.g., Japan), MSA-C is common, occurring in 67% of patients.

The disease more often affects men than women. The female-to-male ratio is around 1:2. (A ratio of 1:3-9 has also been reported.) However, the early and easy diagnosis of impotence may have led to the male statistical predominance of MSA. The mean age at onset in MSA is 52.5-55 years. The disease progresses over intervals of 1-18 years.


Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!