73 results
CN III Palsy - Oculomotor Nerve
 • Ptosis: Loss of innervation of the levator palpebrae superior.
Palsy - Oculomotor Nerve ... comparison to Horner's syndrome ... oblique • Dilated Pupil ... innervation to pupil ... #Cranial #neurology
Isocoria - Pupillary Defects - Differential Diagnosis Algorithm
Relative Afferent Pupil Defect
 • Optic Neuritis
 • Ischemic
Neuropathies • Optic Nerve ... Tumor • Retinal ... Midbrain (Parinaud's Syndrome ... Diagnosis #Algorithm #Causes ... #Ophthalmology
Unilateral Fixed Dilated Pupil - Differential Diagnosis Framework
If Altered Mental Status - Consider Oculomotor (3rd cranial
Oculomotor (3rd cranial ... nerve) Palsy: ... hemorrhage, SAH, tumor ... no neurological cause ... differential #diagnosis #neurology
Causes of Facial Weakness - Differential Diagnosis Algorithm
Forehead Sparing = Central cause
  - Most commonly
Causes of Facial ... Sparing = Central cause ... - Intracranial tumor ... nerve palsy) ... #neurology #sparing
Adie's Pupil
What? Unknown nature & benign
 • Regular and mildly dilated pupil (4-6mm);
 • Light-near dissociaton;
Holmes-Adie Syndrome ... dissociation • Other causes ... trauma/orbital tumor ... #PhysicalExam #neurology ... #ophthalmology
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
palsy • Medial ... One-and-a-half Syndrome ... Skew Deviation Casey ... #Localization #ophthalmology ... #neurology #differential
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
Diagnosis Algorithm Clinical ... • Neurologic ... large/unreactive pupil ... Diagnosis #Algorithm #Causes ... #Ophthalmology
Adie's Pupil on Physical Exam

Adie's pupil is a neurological disorder characterized by a tonically dilated pupil
It is caused by ... infection which causes ... #PhysicalExam #clinical ... #video #ophthalmology ... #neurology #syndrome
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
hand" ± Horner Syndrome ... nerve in the radial ... Carpal Tunnel Syndrome ... axillary nerve ... Myotomes #diagnosis #neurology
Causes of Hemiplegia - Differential Diagnosis Algorithm
Cerebral Hemisphere (Contralateral motor cortex)
 • Aphasia
 • Apraxia
 •
Causes of Hemiplegia ... Sub-Cortical (Corona radiata ... Nerve Palsies ... Brown-Sequard Syndrome ... #Hemiplegia #Neurology