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 |