Which statement best describes the course of myasthenia gravis?

Which statement best describes the course of myasthenia gravis?

• A. Exacerbations and remissions with progressive weakness
• B. Rapidly progressive dementia
• C. Self-limited within weeks
• D. Primarily infectious

Answer: (A)

Myasthenia gravis causes fatigable weakness that worsens with activity and improves with rest. The course is typically fluctuating, with periods of worsening (exacerbations) and improvement (remissions), and over time weakness can become more noticeable if not treated. This pattern fits best with the description of exacerbations and remissions with progressive weakness. It’s not about rapid dementia, a self-limiting illness, or a primarily infectious process.

Myasthenia gravis causes fatigable weakness that worsens with activity and improves with rest. The course is typically fluctuating, with periods of worsening (exacerbations) and improvement (remissions), and over time weakness can become more noticeable if not treated. This pattern fits best with the description of exacerbations and remissions with progressive weakness. It’s not about rapid dementia, a self-limiting illness, or a primarily infectious process.