A to Z: Urticaria (Hives)enparentshttps://kidshealth.org/EN/images/headers/P-khAZDictionary-enHD-AR1.jpgLearn about urticaria, the red raised bumps or welts on the skin that are commonly called hives.urticaria, hives, skin rash, rash, rashes, red bumps, blisters, allergic reactions, allergies, allergic, skin problems, a to z, definitions, glossary, medical terms, anaphylaxis, anaphylactic, food allergies, epi, epinephrine, allergy, reactions, shock, red raised spots, spots, spotty12/05/201204/12/201909/02/2019be6cc813-5b8c-4e5d-a0de-c237290337d7https://kidshealth.org/ws/RadyChildrens/en/parents/az-urticaria.html/<p><em>May also be called: Hives</em></p> <p>Urticaria &mdash; commonly called <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/hives.html/">hives</a> &mdash; are red raised bumps or welts on the skin that can occur anywhere on the body, usually as a reaction to an <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/allergy.html/">allergen</a> (something that causes an allergic reaction).</p> <h3>More to Know</h3> <p>The red welts of hives arise when mast cells in the bloodstream release the chemical histamine, which causes tiny blood vessels under the <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/skin-hair-nails.html/">skin</a> to leak. The hives can appear as small individual spots or large interconnected bumps.</p> <p>Most often, hives are associated with an allergic reaction (to things like food, medications, pets, and insect bites), and can occur within minutes of exposure.</p> <h3>Keep in Mind</h3> <p>In many cases, mild hives won't require any treatment and will go away on their own. If itchiness is a problem, the doctor may recommend an antihistamine medication. If the trigger is identified, treatment includes avoiding it.</p> <p><em>All A to Z dictionary entries are regularly reviewed by KidsHealth medical experts.</em></p>
AllergiesYour eyes itch, your nose is running, you're sneezing, and you're covered in hives. The enemy known as allergies has struck again.https://kidshealth.org/ws/RadyChildrens/en/teens/allergies.html/713fb4e6-f5fa-49aa-b73a-c1488066a909
First Aid: Allergic ReactionsAlthough most allergic reactions aren't serious, severe reactions can be life-threatening and can require immediate medical attention.https://kidshealth.org/ws/RadyChildrens/en/parents/allergic-reaction-sheet.html/59bcd54d-cee6-4f0d-a758-11b1b6c61608
Food AllergiesFood allergies can cause serious and even deadly reactions in kids, so it's important to know how to feed a child with food allergies and to prevent reactions.https://kidshealth.org/ws/RadyChildrens/en/parents/food-allergies.html/d3040abf-fd78-4aac-be4a-3f2dd59957ef
Food Allergies and Food SensitivitiesFind more than 30 articles in English and Spanish about all aspects of food allergies in children.https://kidshealth.org/ws/RadyChildrens/en/parents/center/foodallergies-center.html/d3c22db3-bb92-40fb-ab56-d23fdaf053be
Food Allergies: How to CopeWith food allergies, preventing a reaction means avoiding that food entirely. But sometimes allergens can be hidden in places you don't expect. Here are tips on living with a food allergy.https://kidshealth.org/ws/RadyChildrens/en/teens/food-allergy-coping.html/99fe9b8e-5489-41f1-8843-84ef92b9335f
Help With HivesHives are red, itchy blotches that can appear because of an allergic reaction. Find out more in this article for kids.https://kidshealth.org/ws/RadyChildrens/en/kids/hives.html/d93afb05-82f7-4888-9fea-bf383053c1de
Hives (Urticaria)Hives cause raised red bumps or welts on the skin. They're pretty common and usually not serious. Find out what to do about hives in this article for teens.https://kidshealth.org/ws/RadyChildrens/en/teens/hives.html/9ec00c5c-10d5-4e20-85ab-8ea267cf5389
Learning About AllergiesDuring an allergic reaction, your body's immune system goes into overdrive. Find out more in this article for kids.https://kidshealth.org/ws/RadyChildrens/en/kids/allergies.html/c4c99b6f-c068-41ef-a755-63be7a2fca42
Shellfish AllergyShellfish allergy can cause serious reactions. Find out common symptoms of allergic reactions and how to respond.https://kidshealth.org/ws/RadyChildrens/en/parents/shellfish-allergy.html/06464a79-675d-4509-b7d4-e325bdb46264
What Is Skin Testing for Allergies?A scratch or skin prick test is a common way doctors find out more about a person's allergies.https://kidshealth.org/ws/RadyChildrens/en/parents/skin-test.html/cd2bf968-d812-40dd-bac5-23853e0f6291