Why Postpartum Hives Happen After Pregnancy and What Is Safe
Some women develop hives in the weeks or months after giving birth. Hormonal shifts, a changing immune system, new medications, sleep loss and stress can all play a part, and in some cases postpartum thyroid inflammation is involved.
Possible Causes
- Falling estrogen and progesterone levels
- Immune system rebound after pregnancy
- Postpartum thyroiditis. See thyroid and hives
- New medicines or foods
- Infection, including mastitis
- Stress and exhaustion
Treatment While Breastfeeding
Loratadine and cetirizine are commonly considered compatible with breastfeeding, but always check with your doctor or lactation specialist. Avoid regular use of sedating antihistamines, which may cause drowsiness in babies. Read about the best antihistamine for hives.
Self-Care
- Cool compresses and loose clothing
- Fragrance-free moisturizer
- Short lukewarm showers
- Rest whenever possible
When to Call 911
Go to the emergency room or call 911 immediately if hives are accompanied by difficulty breathing, wheezing, throat tightness, swelling of the lips, tongue or face, light-headedness or a sense that something is seriously wrong. These are warning signs of anaphylaxis.
When to See a Doctor
See a doctor if your symptoms last more than a few days, keep coming back, cover large areas, or interfere with sleep or daily life. Patients with postpartum hives can book an online or in-person consultation at Dr. Tiffany Young’s Hives Treatment Center in San Francisco.
Related Reading
You may also find these guides helpful: causes of hives and hives symptoms.
Frequently Asked Questions About Postpartum Hives
Do postpartum hives go away?
Often within weeks to months, although some persist.
Can I breastfeed with hives?
Yes. Hives do not pass to your baby.
When should I call a doctor?
If hives last more than a few days or you have fever, breast pain or swelling.
Get Relief for Your Hives
Hives with a newborn are tiring, so get an effective, safe plan. Visit our hives treatment page to see the latest treatment options for your outbreak.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis or treatment. If you think you are having a medical emergency, call 911.
