20 results
Myasthenia Gravis Overview

Myasthenia Gravis is an autoimmune disorder of the postsynaptic neuromuscular junction.  Ab to
Myasthenia Gravis ... Ocular- 50%: Ptosis ... chewing, loss of smile ... life-threatening Differential ... #Gravis #diagnosis
Diagnosis of Myasthenia Gravis - Physical Exam Maneuvers
 • Sustained lateral gaze for seconds to elicit
Diagnosis of Myasthenia ... Gravis - Physical ... elicit fatigable ptosis ... • Lifting the ptotic ... #Gravis #PhysicalExam
Ocular Myasthenia Gravis on Physical Exam

A 41yo female was referred by her neurologist for double vision.
non-localized EOM weakness ... and bilateral ptosis ... Myasthenia gravis ... tumor, and always ask ... #clinical #video
Causes of Peripheral Weakness without Sensory Changes - Differential Diagnosis Algorithm
No Objective Weakness
 • Cardio-pulmonary disease
Sensory Changes - Differential ... Diagnosis Algorithm ... • Cardio-pulmonary ... Gravis • Lambert-Eaton ... Myasthenic Syndrome
Drugs associated with worsening of Myasthenia Gravis (MG):
•	D-penicillamine 
•	Botulinum toxin.
•	Telithromycin
•	Fluoroquinolones 
•	Quinine
•	Magnesium
•	Macrolide antibiotics 
•	Corticosteroids (may cause transient
with worsening of Myasthenia ... Gravis (MG): • ... higher risk of myasthenic ... because of bulbar weakness ... ocularmyasthenia #ptosis
Ptosis - Differential Diagnosis Framework

Ptosis (Greek- to fall) Drooping of the upper eyelid that usually results
Ptosis - Differential ... Myasthenia gravis ... and weakness of ... gravis • Botulinum ... gravis • Ocular
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
Double Vision - Differential ... • Look for ptosis ... • Myasthenia ... Gravis is fatiguable ... depressed, abducted, ptosis
Causes of Neuromuscular Weakness
 • Spinal Cord: Demyelinating Disease (MS), Epidural abscess, Infarction, Syringomyelia, Tetanus, Transverse
Demyelinating Disease (MS ... Eaton Syndrome, Myasthenia ... Gravis, Organophosphate ... #Causes #differential ... #diagnosis #neurology
Myasthenia Gravis - Summary
 • an autoimmune disease of the postsynaptic neuromuscular junction associated with antibodies
Myasthenia Gravis ... 50 years in men Diagnosis ... or respiratory weakness ... or generalized weakness ... #Gravis #diagnosis
Causes of Proximal Muscle Weakness That May Mimic Inflammatory Myopathy
 • Central or peripheral neurologic disease
Proximal Muscle Weakness ... neurologic disease • Myasthenia ... gravis • Muscular ... Myopathy #mimics #diagnosis ... #differential #