10 results
Etiologies of Peripheral Neuropathy
 • Metabolic / Nutritional: DiabetesB12 deficiency, Uremia/ESRD, Hypothyroidism
 • Medication-induced: ART, Antibiotics,
Medication-induced: ART ... Inflammatory/AI: CIDP, Guillain-Barre ... Paraprotein-associated (POEMS syndrome ... #differential #diagnosis ... #causes #neurology
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
and Myotomes Reflexes ... • Cauda Equina Syndrome ... Commonly caused ... #Myotomes #diagnosis ... #neurology #sensory
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity Dermatomes ... , T1 (median) Reflexes ... #Myotomes #diagnosis ... #neurology #sensory ... #motor #arm #physicalexam
Guillain-Barre Syndrome - Summary

Acute AIDP that presents with rapidly progressive flaccid weakness

Epidemiology:
 • 1-2 cases/100,000 per
Guillain-Barre Syndrome ... Can begin in arms ... Decreased / Absent Reflexes ... : Arms or legs ... #treatment #neurology
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 ... Differential Diagnosis ... Tethered cord • Guillain-Barre ... region (S2-S4 dermatomes ... #causes #neurology
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
- Differential Diagnosis ... Bleeding - IgA nephropathy ... hematuria • Signs ... artery embolism • AVM ... #causes #urology
The Neurological Evaluation of a Comatose Patient

Definition:
 • Coma: a state of unresponsiveness; the absence of
Differential Diagnosis ... • Locked-in syndrome ... • Examine for signs ... Casey Albin MD @ ... #PhysicalExam #neurology
Guillain-Barré Syndrome (GBS)
Acute autoimmune demyelinating polyradiculoneuropathy that presents with rapidly progressive flaccid weakness
Epidemiology:
 • Incidence: 1
Guillain-Barré Syndrome ... Incidence: 1 to 2 cases ... depressed deep tendon reflexes ... #Barre #Syndrome ... #neurology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
purpura: Strong sign ... loss, arthralgia, arm ... bruits, asymmetric arm ... affects the skin, neurologic ... tract, and often causes
Spinal Cord Disorders - Differential Diagnosis Framework

Spinal cord neurological lesion:
Clinical findings:
 • Symptoms and signs below
• Symptoms and signs ... Non-compressive Spinal Cord Causes ... MCTD, Sjogren syndrome ... dysfunction • Abnormal reflexes ... #neurology #differential