6 results
Upper Motor Neuron (UMN) lesions are lesions occurring anywhere in the CNS from the brain up
affecting the anterior ... the differential diagnosis ... positive Babinski reflex ... anywhere from the anterior ... , peripheral nerve
Amyotrophic Lateral Sclerosis (ALS) Summary
ALS: combination of the clinical examination finding of amyotrophy with the pathologic
multiple spinal cord ... and LMN signs in ... and LMN signs to ... and LMN signs on ... EMG: LMN Signs in
Spinal Cord Disorders - Differential Diagnosis Framework

Spinal cord neurological lesion:
Clinical findings:
 • Symptoms and signs below
• Symptoms and signs ... dysfunction • Abnormal reflexes ... : Areflexia UMN ... Loss of muscle (atrophy ... #neurology #differential
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
of the spinal cord ... Lesions Of The Peripheral ... Gravis - Lack of UMN ... /LMN signs - Lack ... #neurology
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
, T1 (median) Reflexes ... distribution with atrophy ... Anterior Shoulder ... #neurology #sensory ... #motor #arm #physicalexam
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 ... Differential Diagnosis ... : • Spinal cord ... extremity muscle atrophy ... #causes #neurology