One or more of the following symptoms may occur during an allergic reaction:
- Skin rash
- Hives (urticaria)
- Fever
- Facial swelling
- Joint aches or swelling
- Tender lymph nodes
- Shortness of breath
Anaphylactic shock is the most dangerous allergic drug reaction. Anaphylaxis symptoms, which may begin soon after exposure to a drug, include:
- Tightening of, or a “lump” in, the throat that causes breathing difficulty
- Extremely low blood pressure
- Weak, rapid pulse
- Swelling of the lips, mouth and eyelids
- Nausea, vomiting, or diarrhea
- Dizziness or lightheadedness
If you experience any of these symptoms, contact a medical professional immediately, as you may need emergency care.
