Dr Olson Huff and his team of experts provide you with up to date information about your child’s health. In our health section you can find tips on common childhood ailments such as diarrhea, fever and vomiting. Find out how to prepare your child for visits to the doctor or dentist and hints on how to care for your sick child or baby.
Hives or Urticaria
Hives are raised red welts on the skin caused by an allergic reaction.
Many substances can trigger hives:
What is it?
Hives are raised, often itchy, red welts on the surface of the skin. They are usually an allergic reaction to food or medicine.What Causes it?
Hives are caused by an allergic reaction to a substance. Histamine and other chemicals are released into your bloodstream, causing itching, swelling, and other symptoms. Hives are a common reaction, especially in people with other allergies like hay fever.Many substances can trigger hives:
- Medications
- Shellfish, fish, nuts, eggs, milk, and other foods
- Pollen
- Animal dander (especially cats)
- Insect bites
Possible Symptoms
- Swelling of the surface of the skin into red- or skin-colored welts (called wheals) with clearly defined edges
- The welts may enlarge, spread, and join together to form larger areas of flat, raised skin.
- They can also change shape, disappear, and reappear within minutes or hours. The welts tend to start suddenly and resolve quickly. When you press the center of a red welt, it blanches (turns white).
Treatment
Treatment may not be needed if the hives are mild. They may disappear on their own. To reduce itching and swelling:- Avoid hot baths or showers.
- Avoid irritating the area with tight-fitting clothing.
- Apply calamine lotion.
- Take antihistamines.
See a Doctor if:
- Your child is experiencing hives regularly.
- Hives are severe, uncomfortable, and do not respond to self-care.
- Tightness in throat
- Shortness of breath
- Tongue or face swelling
- Fainting
- Wheezing
By Dr. Olson Huff, FAAP
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