When Pupils Don’t Follow the Light

Light-near dissociation
Discover the cause of a unique pupillary exam finding in a patient with a midbrain lesion, diplopia, and headache. Learn about this key neurological sign.
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A Curious Case of Ptosis

Myasthenia gravis
A 23-year-old man has double vision and drooping eyelids that worsen with fatigue. Explore the diagnosis behind this classic neurological presentation.
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When Laughing Gas Isn’t Funny

Nitrous oxide
A 32-year-old man presents with tingling and inability to walk. Discover the surprising link between his neurological symptoms and a common recreational inhalant.
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Painful Vision: A Neurological Clue

Multiple sclerosis
A 13-year-old girl presents with painful, blurry vision and a history of leg weakness. Explore a case of optic neuritis and a relative afferent pupillary defect.
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Headache on the Farm: A Neurological Puzzle

Cystic echinococcosis
A 14-year-old boy from a farm presents with chronic headaches and vomiting. MRI reveals a complex brain cyst. Explore the diagnostic journey and management.
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Confusion, Seizures, & Vision Loss

Posterior reversible encephalopathy syndrome
A 35-year-old with IgA nephropathy develops confusion, seizures, and blurry vision after starting cyclosporine. Explore this critical neurological syndrome.
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A Welder’s Neurologic Decline

Chelation therapy
A 55-year-old welder develops progressive parkinsonism. With normal labs but key MRI findings in the basal ganglia, what is the underlying cause and treatment?
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The Pressure Behind the Eyes

Elevated opening pressure
A 25-year-old woman with obesity presents with headaches and blurred vision. Discover the key diagnostic finding for idiopathic intracranial hypertension.
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A Bulge, a Rash, and Constipation

Postherpetic abdominal pseudohernia
A 78-year-old man presents with constipation and a flank bulge 8 days after a herpes zoster diagnosis. Learn about this rare motor complication of shingles.
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A Painful Ear Rash & Facial Palsy

Herpes zoster oticus
A 48-year-old woman presents with sudden right-sided ear pain, a vesicular rash, and facial paralysis. Explore the classic triad of this viral syndrome.
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