In a 5 year study, clinical events, which refers to the first symptoms of exacerbations, clinical attacks, flare ups, or severe symptoms, indicative of MS, appeared in 34% of individuals. Of those who developed symptoms, 9.6% fulfilled criteria for primary progressive multiple sclerosis (PPMS).
Radiologically isolated syndrome
Overlap syndrome
Polymyalgia rheumatica
Decompression sickness
Complex regional pain syndrome
Edwards syndrome
Unstable angina
Uremic pericarditis