Differential diagnoses for the neuro-ophthalmologic finding of diplopia. Neoplastic: • Intraorbital meningioma • Pituitary adenoma (GH secreting, or apoplexy) • Metastasis • Carcinomatosis Vascular: • Giant cell arteritis • Giant intracranial aneurysm • Microvascular disease Infectious: • Meningitis • Sphenoid sinusitis (CN VI palsy) • Botulism Metabolic: • Wernicke's encephalopathy Inflammatory: • Multiple sclerosis • Myasthenia gravis • GBS • Miller-Fisher syndrome • Orbital pseudotumor • Orbital myositis Miscellaneous: • Traumatic neuropathy (orbital apex fracture, blowout fracture of orbital wall) • Increased intracranial pressure (CN Ill and VI palsy) • INO (lesion of MLF) • Graves' disease (thyroid orbitopathy) • Corneal disease • Cataracts • Idiopathic intracranial hypertension (CN VI palsy) #Diplopia #Differential #Diagnosis #Causes #Ophthalmology
