Onset/Diagnosis

Question 1

More common in temperate climates such as:

Answer 1

• High frequency: North US, Northern Europe, Southern Canada, Southern Australia,New zealand, Scandinavian countries.
• Lower frequency: Asia, Africa, South America

Question 2

Onset:

Answer 2

• May be rapid or gradual

- Can occur between ages of 20 and 40, usually 50

Question 3

Etiology:

Answer 3

Unknown: may be infectious, autoimmune, genetic or combination of factors

Question 4

Diagnosis:

Answer 4

• Requires evidence of multiple neurologic attacks with remissions and exacerbations
• Visual problems and mild parasthesias usually noticed first
• Diagnosis is assisted by SCF analysis, imaging studies (plaques) and evoked potential testing (reduced conduction/ slowing velocity