10 results
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Causes of Leg Pain ... Spinal stenosis/nerve ... cyanosis - Cool extremity ... Paralysis 4) Paresthesia ... diagnosis #lower #extremity
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity ... hand" ± Horner Syndrome ... Carpal Tunnel Syndrome ... regimental badge" anesthesia ... #UpperLimb #Extremity
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
• Cauda Equina Syndrome ... - Low back pain ... saddle (perineal) anesthesia ... Commonly caused ... damage to peroneal nerve
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
compression of nerve ... • S - Saddle anesthesia ... • P - Pain ... - Emergency Causes ... differential #diagnosis #causes
Causes of Hemiplegia - Differential Diagnosis Algorithm
Cerebral Hemisphere (Contralateral motor cortex)
 • Aphasia
 • Apraxia
 •
Causes of Hemiplegia ... Consciousness • Cranial Nerve ... contralateral extremity ... Brown-Sequard Syndrome ... sensory loss to pain
Cauda Equina Syndrome
Causes:
 • Large lumbar degenerative disc herniation (central)
 • Severe lumbar spondylosis
 • Neoplasm
Cauda Equina Syndrome ... Causes: • Large ... Incontinence • Saddle Anesthesia ... damage to sacral nerves ... #CaudaEquina #Syndrome
Rare Causes of Abdominal Pain
 • Hereditary Angioneurotic Edema - Recurrent visceral that may by swelling
Rare Causes of Abdominal ... arcuate ligament syndrome ... - Extremely lean ... persons pain. nausea ... Abdominal cutaneous nerve
Guillain-Barre Syndrome - Summary

Acute AIDP that presents with rapidly progressive flaccid weakness

Epidemiology:
 • 1-2 cases/100,000 per
Epidemiology: • 1-2 cases ... paralysis of all extremity ... 30%) • Facial Nerve ... Hands or feet • Pain ... : Due to nerve root
Orthopedic Emergencies
Compartment Syndrome
 • An increase in compartment pressure to the point where tissue perfusion is
irreversible muscle and nerve ... • Syndrome caused ... - Intense pain ... days, the local pain ... progresses to anaesthesia
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... and peripheral nerves ... • Cogan Syndrome ... extremities, upper extremity ... , testes -> pain