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Benign Episodic Unilateral Mydriasis in a 52-Year-Old Female
Prince Darko1, Prabina Basnet1
1Internal Medicine, Augusta University/University of Georgia (AU/UGA) Piedmont Athens Regional Medical Center, Athens, USA.
Cureus
|July 3, 2025
Summary
Benign episodic unilateral mydriasis (BEUM) is a rare condition causing temporary one-sided pupil dilation, often linked to migraines. This case report details a patient
Area of Science:
- Neurology
- Ophthalmology
Background:
- Benign episodic unilateral mydriasis (BEUM) is a rare condition characterized by transient, self-limited episodes of unilateral pupil dilation.
- BEUM is often associated with migraine and can mimic serious neurological or ophthalmological conditions, posing a diagnostic challenge.
Observation:
- A 52-year-old female with a history of hypertension, anxiety, retinal detachment, and migraines presented with new-onset recurrent left-sided mydriasis and ipsilateral headaches.
- The patient's presentation mimicked other serious conditions, necessitating a thorough diagnostic evaluation.
Findings:
- The case highlights the diagnostic considerations and medical thought processes involved in evaluating a patient with suspected BEUM.
- Detailed assessment in the emergency department and during hospital stay was crucial for diagnosis.
Implications:
- This case underscores the importance of recognizing BEUM as a potential diagnosis in patients presenting with episodic unilateral mydriasis and headaches.
- Accurate diagnosis of BEUM can prevent unnecessary investigations and interventions for more serious conditions.
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