system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 47-year-old woman presents to the emergency department in a frantic state and demands immediate treatment for an allergic reaction, which started soon after she had lunch (approximately 1 hour ago). She had her usual meal consisting of homemade salad and lemonade. She was recently started on niacin because she could not tolerate statins. The only other medication she takes is captopril for hypertension. She has no respiratory difficulty and denies rhinorrhea, epiphora, and diarrhea. She is complaining of a stinging sensation on her face. She has no history of allergies and no family history of allergies. The vital signs include: pulse 90/min, respirations 16/min, blood pressure 120/80 mm Hg, and oxygen saturation, 98% on room air. On physical examination, the face and trunk have a flushed appearance. The rest of the physical examination is unremarkable. The attending physician reassures her that she is not in any immediate danger, and in fact, her symptoms subsided over the next hour. She is advised to take aspirin 30 minutes before her other medications and sent home. Which of the following is the etiology of her symptoms?
assistant
Prostaglandin release