2. Medications
Certain medications can trigger hives, including:
- Penicillin and other antibiotics
- Aspirin
- Ibuprofen
- Naproxen
- Some blood pressure medications
- Certain vaccines (rarely)
Always speak with your healthcare provider before stopping any prescribed medication.
3. Viral Infections
Many people are surprised to learn that infections are one of the most common causes of hives—especially in children.
Possible infections include:
- Common cold
- Influenza
- COVID-19
- Strep throat
- Mononucleosis
In some cases, hives appear during recovery rather than at the beginning of the illness.
4. Insect Bites and Stings
Mosquitoes, bees, wasps, ants, and other insects can trigger localized or widespread hives.
Some people develop a mild allergic reaction, while others experience severe symptoms requiring emergency treatment.
