11 results
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Reflexes: • Knee ... Ankle - S1 • Biceps ... • Cauda Equina Syndrome ... Myotomes #diagnosis #neurology ... sensory #motor #leg #physicalexam
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Motor Function Shoulder ... Jerk - C7, C8 • Biceps ... aracteristic "claw hand ... Myotomes #diagnosis #neurology ... sensory #motor #arm #physicalexam
Yergason's Test on Shoulder Examination
Patient Position: Sitting
Examiner Position: Standing adjacent to the test arm. One hand
One hand stabilizes ... Positive Sign: ... #PhysicalExam # ... clinical #video #msk ... orthopedics #sports #biceps
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
Weakness - Differential ... venom from animal bites ... Lack of UMN/LMN signs ... #Weakness #Differential ... #Diagnosis #neurology
Myasthenia Gravis Overview

Myasthenia Gravis is an autoimmune disorder of the postsynaptic neuromuscular junction.  Ab to
life-threatening Differential ... test - Cogan sign ... - Peek sign ... immunologic assay - MuSK ... diagnosis #management #neurology
Causes of Secondary Hypertension - Workup and Differential Diagnosis
Approach (when evaluation should be done):
1. Severe or
Differential Diagnosis ... when evaluation should ... signs of end-organ ... renal bruit or signs ... Neurologic disorders
Causes of Peripheral and Central Vertigo
PERIPHERAL VERTIGO
1. Benign paroxysmal positional vertigo (BPPV) - Short-lived (typically less
insufficiency (VBI) - Should ... (Wallenberg's syndrome ... Syndrome usually ... signs or symptoms ... Vertigo #Causes #differential
Hearing Loss - Differential Diagnosis Framework

Hearing Loss Types:
• Conductive
• Sensorineural
• Mixed
Presbycusis is the most common type
Hearing Loss - Differential ... The evaluation should ... include a: • Neurologic ... II ○ Susac’s syndrome ... Noise trauma ○ MS
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... purpura: Strong sign ... proximal muscles of shoulder ... affects the skin, neurologic ... cognitive impairment, neurologic
Transverse Myelitis Overview

Focal inflammatory disorder of the spinal cord resulting in rapid onset of weakness, sensory
• Bilateral signs ... NMO-IgG (anti-AQP4) should ... , MOG-IgG test should ... diagnosis #management #neurology ... #differential