A 20-year-old university student presents with a history of gradual mild shortness of breath on exertion and occasional slurred speech in the evenings
A 20-year-old university student presents with a history of gradual mild shortness of breath on exertion and occasional slurred speech in the evenings. She has also been noticing some blurred vision towards the end of the day. She is revising for her university exams and has been very anxious recently. Chest x-ray and lung function tests are unremarkable.
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