A Myasthenia Gravis Knowledge Check for Clinicians
Reviewed by: HU Medical Review Board | Last reviewed: August 2026 | Last updated: October 2026
The diagnosis and management of Myasthenia gravis (MG) requires familiarity with symptomatic therapy, bedside and serologic diagnostic clues, thymoma associations, and medications that may worsen neuromuscular transmission. This 5-question quiz moves across symptomatic treatment, bedside diagnosis, antibody interpretation, pregnancy, and drug-induced disease. Review each question below to test your clinical decision-making.
Clinical Challenge
Pyridostigmine remains a standard first-line symptomatic therapy in generalized myasthenia gravis (gMG). Which statement best describes how it works?
Clinical Challenge
A bedside ice-pack test is often used when MG is suspected in a patient with ptosis. What is the physiological basis for a positive result?
Clinical Challenge
In a patient with acetylcholine receptor (AChR) antibody-positive gMG, positivity for which additional antibody most strongly raises suspicion for an underlying thymoma?
Clinical Challenge
A pregnant patient with gMG develops pre-eclampsia, and the obstetric team is weighing seizure prophylaxis. Which standard agent for seizure prophylaxis should generally be avoided because it can worsen neuromuscular transmission and precipitate myasthenic weakness or crisis?
Clinical Challenge
A patient receiving an immune checkpoint inhibitor for cancer develops new ptosis, diplopia, dyspnea, and proximal weakness over 2 weeks. Which feature most characterizes checkpoint inhibitor-associated MG?