Why do I have a cold and then break out in hives on my arms?

1. Allergy to Medications

- Some medication can cause hives as a side effect.

- If you noticed hives after taking medication for your cold, it is best to stop taking the medication and consult your doctor.

2. Viral Infections

- Some viral infections such as Epstein-Barr virus, hepatitis, or HIV, can cause hives.

- If you have a cold and an infection, it can cause your immune cells to overreact and release histamine, which leads to hives.

3. Exercise-Induced Hives

- If you exercise while having a cold, it may trigger hives to appear on your arms.

- Cold air can cause your skin to become dry and irritated, making it more susceptible to hives.

4. Allergic Reaction to Environmental Triggers

- Cold weather can cause your body to produce more histamine, which can lead to hives.

- Other environmental triggers that can cause hives during a cold include dust, pollen, and pet dander.

5. Stress

- Stress can trigger hives during a cold. When you are stressed, your body releases hormones such as cortisol and adrenaline, which can lead to hives.