16 results
Causes of Peripheral Weakness with Sensory Changes - Differential Diagnosis Algorithm
Radiculopathy:
 • Disc
 • Spondylosis
 •
Causes of Peripheral ... Weakness with Sensory ... Carpal Tunnel • Ulnar ... #Neurology #Differential ... Diagnosis #Algorithm #Causes
Upper Motor Neuron (UMN) lesions are lesions occurring anywhere in the CNS from the brain up
Motor Neuron (UMN ... However, in UMN ... hyporeflexia without sensory ... This lesion causes ... positive Babinski reflex
Spinal Cord Injury by Nerve Root Levels
Spinal Root	Sensory	Motor	Reflex
C4	Acromioclavicular Joint	Respiration	None
C5	Radial Antecubital Fossa	Elbow Flexion	Biceps Reflex
C6	Dorsal Thumb	Wrist Extension	Brachioradialis Reflex
C7	Dorsal
Levels Spinal Root Sensory ... Motor Reflex C4 ... Flexion Biceps Reflex ... Flexion None T1 Ulnar ... differential #diagnosis #Neurology
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Abduction - C8-T1 (ulnar ... Adduction - C7-T1 (ulnar ... , T1 (median) Reflexes ... Myotomes #diagnosis #neurology ... #sensory #motor
Amyotrophic Lateral Sclerosis (ALS) Summary
ALS: combination of the clinical examination finding of amyotrophy with the pathologic
involving both UMN ... - Causes progressive ... Increased Jaw Jerk reflex ... Escorial criteria uses ... Lateral #Sclerosis #neurology
Spinal Cord Disorders - Differential Diagnosis Framework

Spinal cord neurological lesion:
Clinical findings:
 • Symptoms and signs below
abnormal often- Sensory ... Non-compressive Spinal Cord Causes ... dysfunction • Abnormal reflexes ... : Areflexia UMN ... disorders #diagnosis #neurology
Marcus Gunn Pupil - Relative Afferent Pupillary Defect (RAPD)
Definition: Afferent loop of the pupillary light reflex
pupillary light reflex ... impaired (loss of sensory ... Optic nerve* (main cause ... #Defect #RAPD #neurology
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
and Myotomes Reflexes ... Foot drop and sensory ... Commonly caused ... Myotomes #diagnosis #neurology ... #sensory #motor
Median Nerve Anatomy and Function
The Median nerve is the nerve of pre-axial hand function; pinch, delicate
fibres (C8 sensory ... finger through the Ulnar ... nerve, T1 sensory ... and thumb do not flex ... Anatomy #diagnosis #neurology
The Neurological Evaluation of a Comatose Patient

Definition:
 • Coma: a state of unresponsiveness; the absence of
• Gag reflex ... • Cough reflex ... brainstem Motor/Sensory ... Casey Albin MD @ ... #PhysicalExam #neurology