Table 3.114.

Multiple sclerosis subtypes

Subtypes	Frequency	Features
Relapsing-remitting	80% of patients	Short acute attacks about once each year
Primary progressive	10%	Progressive deterioration from outset
Secondary progressive	40% of patients with relapsing-remitting MS	Progressive deterioration in patients with relapsing-remitting MS, after about 10 years
Progressive-relapsing	Rare	Relapses in patients with primary progressive MS