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 7-year-old boy presents to the urgent care from a friends birthday party with trouble breathing. He is immediately placed on supplemental oxygen therapy. His father explains that peanut butter treats were served at the event but he didn’t see his son actually eat one. During the party, his son approached him with facial flushing and some difficulty breathing while itching his face and neck. He was born at 40 weeks via spontaneous vaginal delivery. He has met all developmental milestones and is fully vaccinated. Past medical history is significant for peanut allergy and asthma. He carries an emergency inhaler. Family history is noncontributory.  His blood pressure is 110/85 mm Hg, the heart rate is 110/min, the respiratory rate is 25/min, and the temperature is 37.2°C (99.0°F). On physical examination, he has severe edema over his face and severe audible stridor in both lungs. Of the following, which type of hypersensitivity reaction is this patient experiencing?
 
assistant
Type 1 - anaphylactic hypersensitivity reaction