You’re going about your day when suddenly — itchy, red patches appear on your skin. They sting, they itch, and just when you think they’re gone, they come back. What looks like a simple rash may actually be chronic urticaria — hives that last for weeks, months, or even years. While usually not dangerous, they can disturb sleep, confidence, and daily life.

Hives, also called urticaria, are “raised, red, and intensely itchy welts that appear when your skin reacts to inflammation.” They can be acute (gone in under six weeks) or chronic (recurrent and lasting months or longer). Acute hives often have a clear trigger, while chronic ones may not.

Surprising causes go beyond food or detergent. They include immune system misfires, hormonal changes, stress, physical triggers like heat, cold, pressure, or sunlight, viral infections, certain foods such as red wine or aged cheese, and medications like ibuprofen or antibiotics.

Warning signs to watch for: “red, raised welts that itch intensely,” swelling of lips or eyelids, shifting rashes, or flare-ups worse at night. Seek emergency care if you have trouble breathing or throat tightness.

Relief often starts with antihistamines. Doctors may also prescribe corticosteroids, montelukast, or omalizumab. Lifestyle steps — cold compresses, oatmeal baths, fragrance-free moisturizers, loose clothing, and stress control — can also help.

Hives aren’t always simple. If they keep returning, your skin may be sending signals — listen and seek care.