Hives are a form of rash that can often appear when the body responds to a trigger. They can occur anywhere on the body. Hives are particularly common on the arms and legs because the limbs have more exposure to external factors.
Hives, or urticaria, are raised rashes that can develop as red or purplish spots or patches. The rashes are often itchy and uncomfortable.
Hives typically occur when mast cells, which are part of the immune system, trigger an allergic reaction by releasing histamine into the skin. Histamine is a chemical messenger that the immune system releases in response to an injury or allergic reaction.
Mast cells cause hives and control how long they remain.
A similar process known as angioedema occurs when mast cells deeper in the skin release histamine.
Hives can develop due to an allergic reaction to food, medication, or something in the environment, such as being licked by a dog or from non-allergic sources, such as infection or inflammation.
Individual hives typically go away within 24 hours. However, urticaria can persist for several weeks, even months. This can result in new hives appearing as the previous ones fade.
Hives can occur anywhere on the skin. They are particularly common in areas of the body that experience higher pressure, such as the waistline and the groin.
Read on to learn more about the causes, types, and treatments of hives.
Hives can result from:
Triggers cause the immune system to respond by sending histamines and similar chemicals into the skin, where they cause hives. Triggers can include:
In rare cases, urticaria can be a hereditary condition.
When hives have no known cause, they are called idiopathic urticaria.
If hives only appear on the arms or legs, they are likely the result of a physical trigger, such as extreme temperature, or a contact allergen, such as latex.
Learn about contact dermatitis here.
Urticaria can be acute or chronic.
With acute urticaria, symptoms go away within 6 weeks. However, when a person has chronic urticaria, the condition can persist for longer than this.
There are three types of chronic urticaria:
Learn about hives on black skin here.
Treatment options include over-the-counter (OTC) medication, prescription medication, and home remedies.
OTC options include antihistamines, which people can take in higher doses than doctors typically recommend.
If OTC medication does not work, a doctor may prescribe:
However, medication may not always be necessary, as hives can go away by themselves. Home remedies that can help to ease symptoms include:
Learn about ways to treat hives here.
It is not always possible to prevent hives from developing on the arms and legs, as around 50% of people with chronic urticaria never find out what causes their hives to appear. However, if there is a clear trigger, the most effective preventive measure is to try to avoid it.
Learn more about hives that come and go daily here.
See a doctor if:
Taking a photograph of hives before an appointment can help a doctor make a diagnosis, as the skin may clear up before the appointment.
If swelling underneath the skin accompanies a rash, a person may have angioedema. This condition can cause similar symptoms but requires swift treatment, as it can cause life threatening swelling that affects the ability to breathe.
Anyone who suspects they have angioedema should see a doctor for a diagnosis as soon as possible.
Severe allergic reactions can cause anaphylaxis, an extreme response that can cause a person to go into anaphylactic shock. Seek immediate medical attention if extreme symptoms develop.
Learn about the differences between urticaria and angioedema here.
Hives, or wheals, occur when the immune system sends histamines and other chemicals into the skin in response to triggers.
Urticaria can be acute, where it goes away within 6 weeks. Chronic urticaria lasts longer than this. The hives themselves disappear within 24 hours, but flare-ups may persist as new hives develop.
Physical triggers, allergic reactions, or medical conditions can cause hives, and they can develop anywhere on the body. The arms and legs are more likely to react to contact triggers, such as allergens, because they have greater exposure.
Hives can be itchy and uncomfortable, but they will generally go away on their own. Home remedies such as a cool compress can help to ease symptoms.
If urticaria symptoms continue, a doctor can suggest a treatment plan to help.
Read the rest here:
Hives in common areas: What to know - Medical News Today
- Retrospective analysis of 397 DABE | CCID - Dove Medical Press - December 3rd, 2023 [December 3rd, 2023]
- Derm In The News: November 26-December 2 - Dermatology Times - December 3rd, 2023 [December 3rd, 2023]
- When is the Best Time to Try Alternative Treatments for Eczema? - National Eczema Association - September 23rd, 2023 [September 23rd, 2023]
- How Eczema Negatively Impacted the Way She Talked to Herself - National Eczema Association - September 23rd, 2023 [September 23rd, 2023]
- Colloidal Oatmeal Effective in Improving Atopic Dermatitis in Black ... - Dermatology Times - September 23rd, 2023 [September 23rd, 2023]
- Combination Treatments in HS Require Further Review - Dermatology Times - September 23rd, 2023 [September 23rd, 2023]
- Addressing Misconceptions, Concerns Around Biosimilar Use - Dermatology Times - September 23rd, 2023 [September 23rd, 2023]
- Native American and Indigenous Communities Face Dermatologic ... - Dermatology Times - September 23rd, 2023 [September 23rd, 2023]
- Microwave Therapy Successful for Treating Warts in Children - Dermatology Times - September 23rd, 2023 [September 23rd, 2023]
- 9 Best Antifungal Body Washes Review - The Jerusalem Post - September 23rd, 2023 [September 23rd, 2023]
- Patients With Severe Psoriasis Have Higher Risk of Heart Disease ... - AJMC.com Managed Markets Network - September 23rd, 2023 [September 23rd, 2023]
- Swimming and skin: What to know if a child has eczema - Harvard Health - May 20th, 2023 [May 20th, 2023]
- Experts demand traffic-light labels to show strength of eczema cream - Daily Mail - May 20th, 2023 [May 20th, 2023]
- Its mosquito season. Here are tips for treating bites, preventing them in the first place - Yahoo News - May 20th, 2023 [May 20th, 2023]
- How new EU incentives will help all patients get the best treatments - Euronews - May 20th, 2023 [May 20th, 2023]
- Consistent Use of Ceramide-Containing Products Combined With ... - Dermatology Times - May 20th, 2023 [May 20th, 2023]
- The Best Swimming Skin and Hair Products | livestrong - Livestrong - May 20th, 2023 [May 20th, 2023]
- These 13 Household Items Contain Smells That Are Harmful To ... - Rock 92.9 - May 20th, 2023 [May 20th, 2023]
- FDA Approves First Pill to Treat Moderate-to-Severe Crohn Disease - HealthDay News - May 20th, 2023 [May 20th, 2023]
- Feds investigating eczema cream after two Oregon babies found with high levels of lead in blood - OregonLive - January 27th, 2023 [January 27th, 2023]
- Heres how to treat eczema and other skin conditions for cold weather - The Hindu - January 27th, 2023 [January 27th, 2023]
- Atopic eczema - NHS - November 23rd, 2022 [November 23rd, 2022]
- Seborrheic dermatitis - Symptoms and causes - Mayo Clinic - November 23rd, 2022 [November 23rd, 2022]
- Oatmeal skincare is the perfect solution for sensitive skin (+ best products to try) - Lifestyle Asia Singapore - November 23rd, 2022 [November 23rd, 2022]
- Eczema - StatPearls - NCBI Bookshelf - October 21st, 2022 [October 21st, 2022]
- Cold, dry weather can trigger eczema - how to reduce damage to the skin this winter - Express - October 21st, 2022 [October 21st, 2022]
- Eczema on lips nhs - kved.erxe.de - August 29th, 2022 [August 29th, 2022]
- xrfkc.vitalhaskap.pl - August 29th, 2022 [August 29th, 2022]
- Atopic eczema and alopecia areata - cyasn.kugel-lernfoerderung.de - August 29th, 2022 [August 29th, 2022]
- north shore zipline oahu - owk.tophouse.shop - August 29th, 2022 [August 29th, 2022]
- nak stock - vbi.maxense.shop - August 29th, 2022 [August 29th, 2022]
- Atopic eczema and alopecia areata - zayqif.hydra-market.shop - August 29th, 2022 [August 29th, 2022]
- fort worth map with zip codes - prxrzj.rids-gear.shop - August 29th, 2022 [August 29th, 2022]
- Ear Eczema: Symptoms, Causes, and Treatments - Healthgrades - August 29th, 2022 [August 29th, 2022]
- The Mutha Body Oil Is Worth the Splurge, Especially If You Have Sensitive Skin - POPSUGAR - August 29th, 2022 [August 29th, 2022]
- Are You Allergic to Your Beauty Products? A Patch Test Might Tell You - Allure - August 29th, 2022 [August 29th, 2022]
- Stinky sweat turns out to have a surprising health benefit : Goats and Soda - NPR - August 29th, 2022 [August 29th, 2022]
- Makeup for Eczema-Prone Skin: Considerations, Products, and Tips - Healthline - July 13th, 2022 [July 13th, 2022]
- Eczema Vaccinatum: Symptoms, Diagnosis, and Treatment - Healthline - July 13th, 2022 [July 13th, 2022]
- What Is Topical Steroid Withdrawal in Atopic Dermatitis Treatment? - Everyday Health - July 13th, 2022 [July 13th, 2022]
- A new 'cure for eczema' pill has been signed off but who is allowed to take it? - Cosmopolitan UK - July 13th, 2022 [July 13th, 2022]
- What Causes Dandruff And How To Get Rid Of It, According To A Dermatologist - Fatherly - July 13th, 2022 [July 13th, 2022]
- Allergies on the rise due to climate change - BusinessWorld Online - July 13th, 2022 [July 13th, 2022]
- Cryotherapy Treatment: Uses and Benefits - newschannelnebraska.com - July 13th, 2022 [July 13th, 2022]
- Mutations of Filaggrin Leading to Eggs & Milk Allergies - Physician's Weekly - June 18th, 2022 [June 18th, 2022]
- How AI & the Pandemic Are Changing the Skin & Hair Clinic Experience - The Quint FIT - June 18th, 2022 [June 18th, 2022]
- How to treat your childs dry skin in winter - Lowvelder - June 15th, 2022 [June 15th, 2022]
- Topical steroid: Types, uses, side effects and treatment as revealed by doctors - Hindustan Times - June 15th, 2022 [June 15th, 2022]
- Psoriasis in the Belly Button: Symptoms, Causes, and Treatment - Healthline - June 15th, 2022 [June 15th, 2022]
- In his last days, my father asked for Yiddish music - Forward - June 15th, 2022 [June 15th, 2022]
- Throwing away the water after cooking rice? Know how it could benefit your skin and hair - Times Now - June 15th, 2022 [June 15th, 2022]
- Family 'devastated and numb' as boy, 9, dies a day after breaking his arm - Coventry Live - June 15th, 2022 [June 15th, 2022]
- Happy Cappy Not Just For Babies; Everyone With Sensitive Skin Can Benefit - Pediatric Shampoo Granted Trademark in New Campaign: 'No Scalp Left... - June 15th, 2022 [June 15th, 2022]
- Eczema on black skin: Pictures, symptoms, and treatment - June 11th, 2022 [June 11th, 2022]
- Eczema on the Ears or Eyebrows: How to Cope - Everyday Health - June 11th, 2022 [June 11th, 2022]
- What People With Eczema Need to Know About Self-Screening for Skin Cancer - National Eczema Association - June 11th, 2022 [June 11th, 2022]
- How to protect children with eczema from scratching until they bleed - Channel NewsAsia - June 11th, 2022 [June 11th, 2022]
- Autism, allergies and other diseases and disorders afflicted baby boomers, too - PolitiFact - June 11th, 2022 [June 11th, 2022]
- Is saltwater good for the skin? What to know Beaufort South Carolina The Island News - The Island News - June 11th, 2022 [June 11th, 2022]
- What's trending? The most-read stories on APAC beauty market and consumer insights - CosmeticsDesign-Asia.com - June 11th, 2022 [June 11th, 2022]
- Canada to require a warning be printed on every cigarette - Coventry Live - June 11th, 2022 [June 11th, 2022]
- Holistic Acne Treatments That Are Better Than What You've Been Doing - The List - June 11th, 2022 [June 11th, 2022]
- Almirall: Eight out of Ten Patients Maintained Skin Clearance at One Year in Lebrikizumab Atopic Dermatitis Monotherapy Trials - PR Newswire UK - June 7th, 2022 [June 7th, 2022]
- Woman left balding and bedbound by chronic eczema clears the condition with a 9 face cream - The Independent - June 7th, 2022 [June 7th, 2022]
- Poll: Six in 10 people would eat food that has fallen on the floor - Coventry Live - June 7th, 2022 [June 7th, 2022]
- The itch that rashes: Treating and understanding eczema - El Paso Inc. - June 5th, 2022 [June 5th, 2022]
- Celebrities With Eczema Speak Out - Everyday Health - June 5th, 2022 [June 5th, 2022]
- Lotion, Cream, Gel, and Ointment Similarly Effective for Childhood Eczema - HealthDay News - June 5th, 2022 [June 5th, 2022]
- Antibiotics Given Before C-sections Are Not Linked to Asthma, Eczema in Young Children - Pharmacy Times - June 5th, 2022 [June 5th, 2022]
- Eczema Skin-Care Products Market Size, Scope and Forecast | Alliance Pharma Plc., Bausch Health Companies Inc., Bayer AG., AbbVie Inc., Eli Lilly and... - June 5th, 2022 [June 5th, 2022]
- What are the benefits of ceramides for the skin? - Medical News Today - June 5th, 2022 [June 5th, 2022]
- Some Allergies Associated With Lower Risk of SARS-CoV-2 Infection - Smithsonian Magazine - June 5th, 2022 [June 5th, 2022]
- The CDC is sending monkeypox vaccines to people at high risk in a race to prevent the spread - CNBC - June 5th, 2022 [June 5th, 2022]
- Missing Sikeston teen may be heading to Kansas City area - KMBC Kansas City - June 5th, 2022 [June 5th, 2022]
- Should you cleanse or exfoliate first? What to know - Medical News Today - June 5th, 2022 [June 5th, 2022]
- Dry Skin: Eczema, Itchy Skin, Causes, Treatments, Relief, Types - May 17th, 2022 [May 17th, 2022]
- Foods to Eat and Foods to Avoid If You Have Eczema - The Beet - May 17th, 2022 [May 17th, 2022]
- 3 Women With Eczema Describe the Ways They Combat Nighttime Flare-Ups - Verve Times - May 17th, 2022 [May 17th, 2022]
- The Challenges of Parenting a Child With Eczema - Verve Times - May 17th, 2022 [May 17th, 2022]
- Manuka Honey Benefits for Skin: Benefits, Masks, and More - Greatist - May 17th, 2022 [May 17th, 2022]