34 results
Peripheral and Central Causes of Vertigo
Peripheral Causes (Common):
 - Labyrinth: Benign paroxysmal positional vertigo, Méniére disease,
Peripheral and Central Causes ... of Vertigo Peripheral ... Causes (Common) ... #differential # ... diagnosis #neurology
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
Oculomotor) Nerve Palsy ... One-and-a-half Syndrome ... Skew Deviation Casey ... ophthalmology #neurology ... #differential #
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Conditions Erb's Palsy ... Saturday night palsy ... Carpal Tunnel Syndrome ... Anterior Shoulder Dislocation ... Myotomes #diagnosis #neurology
Adie's Pupil
What? Unknown nature & benign
 • Regular and mildly dilated pupil (4-6mm);
 • Light-near dissociaton;
Holmes-Adie Syndrome ... Young females Differential ... Diagnosis: • CN Ill Palsy ... • Other causes ... #PhysicalExam #neurology
Lateral Medullary Syndrome - Wallenberg's Syndrome
Acute continuous vertigo due to Posterior Circulation Stroke (usually Posterior Inferior
Acute continuous vertigo ... Artery occlusion) Clinical ... Findings: • Nausea ... /vomiting/vertigo ... #Wallenbergs #neurology
Causes of Peripheral and Central Vertigo
PERIPHERAL VERTIGO
1. Benign paroxysmal positional vertigo (BPPV) - Short-lived (typically less
Causes of Peripheral ... (Wallenberg's syndrome ... Syndrome usually ... #Causes #differential ... #diagnosis #neurology
Dizziness and Vertigo Algorithm
Presyncope:
 • Feels "faint" or like they are going to "pass out"
 •
Dizziness and Vertigo ... Associated with nausea ... Algorithm #dizzy #differential ... #diagnosis #neurology ... #management
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
Double Vision - Differential ... Diagnosis Algorithm Clinical ... • CN VI palsy ... • Neurologic ... Cataract/Lens Dislocation
Acute Kidney Injury - AKI Workup Algorithm and Differential Diagnosis
Baseline Investigations: full blood count with differential,
osmolarity If cause ... investigations depending on clinical ... • Cardio-renal syndrome ... #Diagnosis #nephrology ... #causes
Adie's Pupil on Physical Exam

Adie's pupil is a neurological disorder characterized by a tonically dilated pupil
i.e., light-near dissociation ... It is caused by ... #PhysicalExam #clinical ... ophthalmology #neurology ... #syndrome