16 results
Myotomes of the Spinal Cord
Each segmental nerve root innervates more than one muscle. For simplicity, certain
Myotomes of the ... Each segmental nerve ... single spinal nerve ... more resilient to injury ... #Diagnosis #Neurology
Causes of Neuromuscular Weakness
 • Spinal Cord: Demyelinating Disease (MS), Epidural abscess, Infarction, Syringomyelia, Tetanus, Transverse
Tumor • Motor Nerves ... Poliomyelitis, Guillain-Barre ... injury, Sarcoid ... #differential #diagnosis ... #neurology
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
Fasciculus (MLF) Iniury ... One-and-a-half Syndrome ... ophthalmology #neurology ... #differential #diagnosis ... #ocular
NINDS Diagnostic Criteria for Guillain Barre Syndrome 
Features Required for Guillain-Barré Syndrome:
 • Progressive muscle weakness
Criteria for Guillain Barre ... Required for Guillain-Barré ... signs, Cranial nerve ... #Syndrome #diagnosis ... #criteria #neurology
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Dermatomes and Myotomes ... spared in this injury ... Carpal Tunnel Syndrome ... #diagnosis #neurology ... sensory #motor #arm #physicalexam
Algorithm showing a stepwise approach to the assessment and investigation of a possible neuropathy. CIDP, chronic
GBS, Guillain-Barré ... syndrome; HNPP, ... palsies; NCS, nerve ... #Diagnosis #Neurology
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Dermatomes and Myotomes ... • Cauda Equina Syndrome ... damage to peroneal nerve ... #diagnosis #neurology ... sensory #motor #leg #physicalexam
Guillain-Barre Syndrome - Summary

Acute AIDP that presents with rapidly progressive flaccid weakness

Epidemiology:
 • 1-2 cases/100,000 per
Guillain-Barre Syndrome ... • Pain: Due to nerve ... Diagnosis: • ... #Syndrome #diagnosis ... management #treatment #neurology
Reflex Testing - Causes of Hyporeflexia and Hyperreflexia
Focal Hyporeflexia: 
 • Radiculopathy, Mononeuropathy, Polyneuropathy, Acute stroke,
Acute spinal cord injury ... Guillain-Barré syndrome ... in spinal cord injury ... #differential #diagnosis ... #table #neurology
Guillain-Barré Syndrome (GBS)
Acute autoimmune demyelinating polyradiculoneuropathy that presents with rapidly progressive flaccid weakness
Epidemiology:
 • Incidence: 1
Guillain-Barré Syndrome ... with peripheral nerve ... of peripheral nerve ... #Syndrome #diagnosis ... #management #neurology