Mr. Roberts, a 65-year-old male. presents to the emergency department with sudden onset of severe pain in his right eye. blurred vision, seeing halos around lights, nausea, and vomiting. His right eye is red the cornea appears cloudy, and his intraocular pressure is elevated. What is the most likely diagnosis?
Conjunctivitis
Acute angle-closure glaucoma
Retinal detachment
Migraine with aura
The Correct Answer is B
A. Conjunctivitis. Conjunctivitis generally presents with redness and discharge but does not cause elevated intraocular pressure, severe pain, or visual disturbances like halos.
B. Acute angle-closure glaucoma. Acute angle-closure glaucoma is characterized by sudden severe eye pain, blurred vision, halos around lights, nausea, and vomiting, along with elevated intraocular pressure and a cloudy cornea.
C. Retinal detachment. Retinal detachment may cause sudden vision loss or flashing lights but typically lacks pain, nausea, or vomiting, and does not affect intraocular pressure.
D. Migraine with aura. A migraine with aura may cause visual disturbances but does not present with eye pain, red eye, or elevated intraocular pressure.
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Correct Answer is B
Explanation
A. Inflammation of the motor cortex leads to decreased coordination and balance. Parkinson’s disease is not caused by inflammation in the motor cortex; it primarily involves the loss of dopamine-producing neurons.
B. Degeneration of dopamine-producing neurons in the substantia nigra of the brain leads to motor dysfunction. Parkinson’s disease is caused by the degeneration of dopamine-producing neurons in the substantia nigra, leading to motor symptoms such as tremors, rigidity, and bradykinesia.
C. A loss of acetylcholine in the brain leads to memory problems and cognitive decline. While a loss of acetylcholine is associated with Alzheimer’s disease, it is not the primary issue in Parkinson’s disease.
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