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​Symptoms and Signs – Differential Diagnosis of Focal Neurologic Deficit 
TRAUMATIC: INTRACRANIAL, INTRASPINAL
• Subdural hematoma
• Intraparenchymal hemorrhage
• Epidural hematoma
• Traumatic hemorrhagic necrosis
INFECTIOUS
• Brain abscess
• Epidural and subdural abscesses
• Meningitis
NEOPLASTIC
• Primary CNS tumors
• Metastatic tumors
• Syringomyelia
• Vascular
• Thrombosis
• Embolism
• Spontaneous hemorrhage: arteriovenous malformation, aneurysm, hypertensive
METABOLIC
• Hypoglycemia
• Vitamin B12 deficiency
• Post seizure
• Hyperosmolar nonketotic
OTHER
• Migraine
• Bell’s palsy
• Psychogenic
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