16 results
Superior Oblique Myokymia 
Eye movement disorder where the superior oblique twitches periodically causing jumping of a
Eye movement ... It is probably caused ... the trochlear nerve ... (CN IV) at the ... #trochlear #CN4
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
Disorders • CN ... Palsy • CN IV ... palsy • CN VI ... palsy • Medial ... #differential #diagnosis
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Extension C6, C7, C8 (radial ... Extension - C7, C8 (radial ... Extension - C7, C8 (radial ... damage to the radial ... nerve in the radial
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
- Differential Diagnosis ... • CN VI palsy ... for ptosis with CN ... a mass as the cause ... #Algorithm #Causes
Bell's Palsy - Diagnosis and Management Summary - GrepMed Handbook

Acute Idiopathic Unilateral Facial Nerve (CN7) Palsy
Presentation:
Nerve (CN7) Palsy ... bilateral, non-CN7 ... MRI+gad (stroke, CN7 ... sarcoid or other CNS ... inflammatory cause
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
- Differential Diagnosis ... cells per μL • Diagnosis ... • Suspect in movement ... Demyelinating disease caused ... of the abducens nerve
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
Cord Injury by Nerve ... Motor Reflex C4 ... Respiration None C5 ... Radial Antecubital ... #differential #diagnosis
Hemimasticatory Spasm on Physical Exam

Hemimasticatory spasm is a disorder of the trigeminal nerve → involuntary jaw
the trigeminal nerve ... Myokimia will cause ... such gross movement ... clinical #cheek #CN5 ... #video #neurology
Adie's Pupil
What? Unknown nature & benign
 • Regular and mildly dilated pupil (4-6mm);
 • Light-near dissociaton;
females Differential Diagnosis ... : • CN Ill Palsy ... abnormal extraocular movements ... dissociation • Other causes ... @neudrawlogy #Adies
Left Tongue Deviation caused by UMN XII palsy

Looks can be deceiving. The UMN innervation of most
Tongue Deviation caused ... nerve receives ... this rule are CN ... the preserved movements ... palsy #clinical #video