20 results
Bell's palsy
There are many different causes of Facial Nerve Palsy. However, the commonest
cause of unilateral facial
many different causes ... the commonest cause ... of unilateral facial ... Loss of Corneal Reflex ... #Neurology #Signs
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity ... , T1 (median) Reflexes ... Conditions Erb's Palsy ... Saturday night palsy ... Myotomes #diagnosis #neurology
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
Sciatica: often bilateral ... - Emergency Causes ... Examination - bilateral ... differential #diagnosis #causes ... #neurology
Unilateral Fixed Dilated Pupil - Differential Diagnosis Framework
If Altered Mental Status - Consider Oculomotor (3rd cranial
Unilateral Fixed ... cranial nerve) Palsy ... lntracranial hemorrhage, SAH ... no neurological cause ... 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 ... #Localization #ophthalmology ... #neurology #differential
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... and Myotomes Reflexes ... • Cauda Equina Syndrome ... Commonly caused ... Myotomes #diagnosis #neurology
Mydriasis and Miosis - Differential Diagnosis Framework

Causes of Mydriasis:
Dilated pupils (mydriasis) more than 7mm
 • Unilateral
response, Serotonin syndrome ... Miosis: Horner's syndrome ... , uveitis) • Bilateral ... Robertson pupils), DM, SAH ... differential #diagnosis #ophthalmology
Adie's Pupil
What? Unknown nature & benign
 • Regular and mildly dilated pupil (4-6mm);
 • Light-near dissociaton;
Holmes-Adie Syndrome ... Diagnosis: • CN Ill Palsy ... dissociation • Other causes ... #PhysicalExam #neurology ... #ophthalmology
Bilateral tonic pupils observed in the patient with Ross syndrome. 
Absence of bilateral pupillary contraction despite
patient with Ross syndrome ... clinical #video #ophthalmology ... #ross #syndrome ... #bilateral #reflex ... #neurology #absent
Causes of Hemiplegia - Differential Diagnosis Algorithm
Cerebral Hemisphere (Contralateral motor cortex)
 • Aphasia
 • Apraxia
 •
Causes of Hemiplegia ... contralateral extremity ... findings Unilateral ... Brown-Sequard Syndrome ... #Hemiplegia #Neurology