89 results
Reflex Testing - Causes of Hyporeflexia and Hyperreflexia
Focal Hyporeflexia: 
 • Radiculopathy, Mononeuropathy, Polyneuropathy, Acute stroke,
Reflex Testing - Causes ... Deep coma (any cause ... Guillain-Barré syndrome ... Hyperthyroidism, Serotonin syndrome ... differential #diagnosis #table
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Carbenoxolone, SAME, Cushing ... Syndrome • HTN ... Renin secreting tumor ... , Gitelman syndrom ... Diagnosis #Algorithm #causes
Important Causes of Diplopia 
TIER 1-CRITICAL
Basilar artery thrombosis, Botulism, Basilar meningitis, Aneurysmn
TIER 2-EMERGENT:
Vertebral dissection, Myasthenia gravis,
Important Causes ... Diplopia TIER 1-CRITICAL ... , Orbital apex syndrome ... URGENT: Brainstem tumor ... differential #diagnosis #ophthalmology
Hypermagnesemia - Etiologies by Mechanism
Renal Failure 
Excessive Mg Administration 
 - Massive PO intake
Mechanisms - Tumor ... lysis syndrome ... High #Magnesium #Table ... #Causes #Management
Gerstmann Syndrome
1) Finger agnosia - Inability to name their own fingers, affecting both sides
2) Right-left confusion
Gerstmann Syndrome ... patient is still able ... to copy Causes ... : Stroke (main cause ... Brain Injury, Tumor
Horner's Syndrome: Loss of sympathetic nervous system input to (in this case) right eye. 
Note that
Horner's Syndrome ... was due to tumor ... UCSD Catalog of Clinical ... Images #Clinical ... #Ophthalmology
Differential diagnoses for the neuro-ophthalmologic finding of diplopia.
Neoplastic: 
 • Intraorbital meningioma 
 • Pituitary adenoma
for the neuro-ophthalmologic ... finding of diplopia ... Miller-Fisher syndrome ... Differential #Diagnosis #Causes ... #Ophthalmology
Isocoria - Pupillary Defects - Differential Diagnosis Algorithm
Relative Afferent Pupil Defect
 • Optic Neuritis
 • Ischemic
• Optic Nerve Tumor ... Midbrain (Parinaud's Syndrome ... ): • Tumor • ... Diagnosis #Algorithm #Causes ... #Ophthalmology
Leukostasis vs Tumor Lysis Syndrome
Leukostasis:
 • Pathophysiology: Large, immature blasts and high WBC count cause hyperviscosity
Lysis Syndrome ... Leukostasis: • Pathophysiology ... high WBC count cause ... hyperviscosity syndrome ... • Pathophysiology
Alzheimer’s Disease: Pathogenesis and Clinical Findings
Risk factor for Late Onset Alzheimer's (99% of cases):
 - Increasing
Pathogenesis and Clinical ... Alzheimer's (99% of cases ... mutations - Down syndrome ... Aphasia, word-finding ... AlzheimersDisease #Dementia #pathophysiology