How is limb muscle weakness characterized in myasthenia gravis (MG)?

Updated: Aug 27, 2018
  • Author: Abbas Jowkar, MD; Chief Editor: Nicholas Lorenzo, MD, MHA, CPE  more...
  • Print
Answer

Certain limb muscles are involved more commonly than others (eg, upper limb muscles are more likely to be involved than lower limb muscles). In the upper limbs, deltoids and extensors of the wrist and fingers are affected most. The triceps is more likely to be affected than the biceps. In the lower extremities, commonly involved muscles include hip flexors, quadriceps, and hamstrings, with involvement of foot dorsiflexors or plantar flexors less common.


Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!