Your patient is a 19-year-old female. She is complaining of urticaria and itching on bilateral upper extremities, across her chest, and on her neck. She states that, to her knowledge, she is not allergic to anything. She states that she started taking an antibiotic the previous morning for a urinary tract infection. She took her medicine this morning as prescribed. What would you consider as the field diagnosis?

A) Measles
B) Allergic reaction to the medication
C) Anaphylactic reaction to the medication
D) Poison ivy

Answer: B) Allergic reaction to the medication