Systemic: Allergic: Itch Generalized-Medium, Systemic: Allergic: Rash Generalized-Medium, Systemic: Headache-Medium, Additional Details: Patient reports a reaction that she is not certain is linked to the vaccine. She experienced a headache on the day of vaccination and on and off since. She has an itchy rash on her neck and chest that appeared a couple days after. She also mentions experiencing severe pain. Patient has taken Zyrtec.