Myasthenia Gravis

Exacerbating Factors

The most common exacerbating factor is exertion resulting in fatigability, which is the hallmark feature of myasthenia gravis.. Symptoms become more marked during the day

The following drugs may exacerbate myasthenia:

• penicillamine
• quinidine, procainamide
• beta-blockers
• lithium
• phenytoin
• antibiotics: gentamicin, macrolides, quinolones, tetracyclines

Crisis