16 results
Causes of Peripheral Weakness without Sensory Changes - Differential Diagnosis Algorithm
No Objective Weakness
 • Cardio-pulmonary disease
Causes of Peripheral ... Oculomotor • Myasthenia ... Lambert-Eaton Myasthenic ... Syndrome • Botulism ... #Neurology #Differential
Myasthenia Gravis Overview

Myasthenia Gravis is an autoimmune disorder of the postsynaptic neuromuscular junction.  Ab to
Ocular- 50%: Ptosis ... Limb- proximal weakness ... crises”. ... bulbar weakness ... diagnosis #management #neurology
Causes of Neuromuscular Weakness
 • Spinal Cord: Demyelinating Disease (MS), Epidural abscess, Infarction, Syringomyelia, Tetanus, Transverse
Causes of Neuromuscular ... Weakness • Spinal ... Guillain-Barre syndrome ... , Myasthenia Gravis ... #diagnosis #neurology
Diagnosis of Myasthenia Gravis - Physical Exam Maneuvers
 • Sustained lateral gaze for seconds to elicit
Diagnosis of Myasthenia ... ptotic eyelid will cause ... BrighamMedRes #Myasthenia ... #Gravis #PhysicalExam ... Maneuvers #Diagnosis #neurology
Ocular Myasthenia Gravis on Physical Exam

A 41yo female was referred by her neurologist for double vision.
Ocular Myasthenia ... non-localized EOM weakness ... Her ocular exam ... #PhysicalExam # ... ophthalmology #neurology
Myasthenia Gravis - Summary
 • an autoimmune disease of the postsynaptic neuromuscular junction associated with antibodies
More likely to cause ... or respiratory weakness ... Symptomatic treatment Of ocular ... glucocorticoids - can cause ... diagnosis #management #neurology
Ptosis - Differential Diagnosis Framework

Ptosis (Greek- to fall) Drooping of the upper eyelid that usually results
Myasthenia gravis ... Neurogenic Ptosis - Neurologic ... to ptosis and weakness ... • Myasthenia gravis ... #Ptosis #neurology
Neuromyelitis Optica (NMO) - Clinical Manifestations
 • Optic neuritis: Reduced visual acuity, ranging from mild to
desaturation, Scotoma, Ocular ... involvement: Intractable nausea ... Other brainstem syndromes ... , Myasthenia gravis ... Manifestations #diagnosis #neurology
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
hand" ± Horner Syndrome ... Carpal Tunnel Syndrome ... anesthesia and deltoid weakness ... Myotomes #diagnosis #neurology ... sensory #motor #arm #physicalexam
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
• Cauda Equina Syndrome ... Commonly caused ... claudication and weakness ... Myotomes #diagnosis #neurology ... sensory #motor #leg #physicalexam