13 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity ... Dermatomes and Myotomes ... Motor Function Shoulder ... #diagnosis #neurology ... sensory #motor #arm #physicalexam
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... Dermatomes and Myotomes ... Commonly caused ... #diagnosis #neurology ... sensory #motor #leg #physicalexam
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
- Emergency Causes ... lumbar stenosis • Vascular ... region (S2-S4 dermatomes ... differential #diagnosis #causes ... #neurology
Amyotrophic Lateral Sclerosis (ALS) Summary
ALS: combination of the clinical examination finding of amyotrophy with the pathologic
- Causes progressive ... 4) progressive muscular ... segment: Upper extremity ... , lower extremity ... Lateral #Sclerosis #neurology
Facioscapulohumeral Muscular Dystrophy (FSH, FSHD)

Young man with left sided wasting. On examination with prominent axillary folds
Facioscapulohumeral Muscular ... middle trapezius causes ... protraction of the shoulder ... clinical #video #physicalexam ... #shoulder #neurology
Causes of Secondary Hypertension - Workup and Differential Diagnosis
Approach (when evaluation should be done):
1. Severe or
when evaluation should ... signs of end-organ ... renal bruit or signs ... Causes: • Vascular ... Neurologic disorders
Causes of Peripheral and Central Vertigo
PERIPHERAL VERTIGO
1. Benign paroxysmal positional vertigo (BPPV) - Short-lived (typically less
Causes of Peripheral ... Vascular disorders ... insufficiency (VBI) - Should ... without an obvious cause ... signs or symptoms
Spinal Cord Disorders - Differential Diagnosis Framework

Spinal cord neurological lesion:
Clinical findings:
 • Symptoms and signs below
signs below the ... Non-compressive Spinal Cord Causes ... Vascular/Blockage ... , lower extremity ... disorders #diagnosis #neurology
Transverse lines of the fingernails. (A) Beau’s lines (arrows) of the thumbnail. (B) Mees’ lines (arrowheads)
the nails can be caused ... are a typical sign ... by vascular congestion ... chemotherapeutic agents should ... Ridges #Clinical #PhysicalExam
Posterior Reversible Encephalopathy Syndrome (PRES) Overview

Clinico-Radiological Syndrome, characterized by:
 • Headache
 • Seizures
 • Altered mental
may precede the neurologic ... count in the CSF should ... the underlying cause ... Seizures: Treat with AEDs ... until cause identified