25th August 2023

A 45-year-old woman presents to the A&E with acute onset of shortness of breath, wheezing, and swelling

A 45-year-old woman presents to the A&E with acute onset of shortness of breath, wheezing, and swelling of her lips and tongue. She also reports a widespread, intensely itchy rash that appeared abruptly. She was fine until she was stung by a bee while gardening. On examination, she is anxious, and her blood pressure is 90/50 mmHg.

Which of the following is the most likely diagnosis?