Cause for Small Welts on My Back. Rash Stops After 6 Months. Starts Again Within 3 Months.

Urticaria is the medical term for hives. People sometimes confuse hives for other pare atmospheric condition such as eczema and rosacea, simply what makes them different is their appearance and crusade.

Hives are a specific blazon of rash acquired when tissues below the surface of the pare fill with fluid, causing raised, red, itchy bumps referred to as weals (or welts). Allergy is the almost common cause, only hives can also occur due to an infection, autoimmune disease, or sudden changes in the environment.

Verywell

The article details the signs and symptoms of hives then that you can tell them from other types of rashes. It besides explains how hives tin differ based on the underlying cause and what each specific skin reaction looks like.

Frequent Symptoms

Urticaria is virtually often caused by an allergy or infection, but it tin can occur due to stress, vibration, or sudden changes in the environment. An aberrant allowed response causes blood vessels to leak fluid into the middle layer of peel, chosen the dermis. Hives are the consequence.

You can tell hives from other types of rashes by the following signs and symptoms:

• Hives crusade raised, carmine, welt-like bumps.
• Hives usually have well-defined borders.
• Hives cause itching, sometimes intense and oft worse at night.
• Hives can sometimes cause burning or stinging.
• Hives blanch (whiten) when pressed.
• When hives resolve, they leave no scarring or tissue damage.

Hive can appear on any function of the body and be as pocket-size equally a pinpoint or large equally a plate. They can change shape, move around, meld, disappear, and reappear over short periods of time.

Hives most often appear in the evening or early on forenoon just afterwards waking. They generally aren't associated with fever, nausea, musculus aches, joint hurting, or headaches unless an infection is involved.

Recap

Hives are a blazon of rash that are raised, carmine, itchy, and welt-similar with well-defined borders. They can differ in size and location and will not cause any scarring or skin harm once they resolve.

Acute vs. Chronic

Urticaria affects up to twenty% of people of all ages, races, and genders. Hives can either be acute or chronic depending on how long they last. Acute hives last for less than six weeks, while chronic hives persist beyond vi weeks.

Acute urticaria is more common in children and young adults. The majority are idiopathic, pregnant that the cause is unknown. Acute hives tend to kickoff and terminate quickly, often lasting a few hours and rarely for more than a few days. If a cause is found, it is nigh oft an infection, insect bite, or a drug or food allergy.

Chronic urticaria is often idiopathic and tin recur over the class of months or years. In one 2013 study, 70% of people with chronic hives had symptoms that lasted for more than a twelvemonth, while 14% had symptoms for five or more years. In one-half of the cases, no cause was found.

Hives on legs. Raimo Suhonen / DermNet / CC BY-NC-ND

Symptoms by Type

The look and location of hives can vary based on the cause. The appearance can sometimes give a clue as to the crusade simply non always.

Examples include:

• Common cold urticaria: This is caused past exposure to cold temperatures. It usually causes welts between a quarter of an inch to one inch in size, either slightly reddish or pare-colored. Fainting tin can occur if large areas of skin are involved.
• Cholinergic urticaria: Also known as estrus rash, this blazon of hive is caused past excessive sweating, unremarkably due to strenuous exercise. Information technology causes very small weals surrounded past vivid red flares.
• Dermographism urticaria: This is acquired by the business firm stroking or scratching of the pare, creating hives along the line of contact. The weals tend to appear inside five to ten minutes and disappear within 10 to 15 minutes.
• Pressure urticaria: This type is caused when pressure is placed on the skin, such as when you wearable tight clothing or stand on your feet for too long. Information technology causes dense, red, itchy weals that tin can sometimes be a little painful.
• Solar urticaria: Exposure to ultraviolet (UV) light from the sun can cause hives on sun-exposed areas of pare, ofttimes within minutes. The hives will announced "aroused," ofttimes with intense redness and warmth. Fainting can occur if the hives are widespread.
• Stress urticaria: This is a type of chronic hives caused by emotional stress. With that said, the condition is hard to ascertain as stress is simply presumed to be the cause. The weals tend to be larger and tin occur on any part of the body.
• Vibratory urticaria: Vibrations, such as clapping or a bumpy motorcar ride, tin cause hives in some people. The hives tend to come and get within an hour. Flushing, headaches, blurry vision, or a metal gustatory modality tin can sometimes occur along with them.
• H2o urticaria: This rare grade of hives is caused by contact with water. The hives are usually minor and are near often on the neck, upper body, and arms. They too tend to come and go within an hour.

Epitomize

In that location are many different types of urticaria, including those that are caused by cold, rut, vibration, pressure, scratching, and even h2o. The hives may exist acute (lasting less than six weeks) or chronic (lasting more than vi weeks).

Rare Symptoms

Rarely, urticaria tin can progress to a severe, all-trunk allergy known equally anaphylaxis. Anaphylaxis affects many organ systems at one time and can be life-threatening if not treated as an emergency. Hives are one of the possible features of anaphylaxis and volition typically exist severe.

Symptoms of anaphylaxis include:

• Widespread hives or rash
• Shortness of breath
• Wheezing
• Dizziness or lightheadedness
• Tummy cramps
• Nausea or airsickness
• Diarrhea
• Rapid or irregular heartbeat
• Swelling of the lips, tongue, or throat
• Defoliation
• A feeling of impending doom
• Fainting
• Seizures

If left untreated, anaphylaxis tin lead to stupor, coma, asphyxiation, cardiac abort, and death.

When to Run across a Doctor

If y'all accept hives that are not astringent and only crusade balmy itching, you can usually treat them at dwelling. Nigh cases will resolve within a few hours to several days. If they concluding for more a week or worsen, run across a doctor as soon as possible.

If symptoms are recurrent, ask your doctor for a referral to either a dermatologist, who specializes in diseases of the skin, or an allergist, who specializes in allergies.

Based on your symptoms and medical history, your medico may as well want to cheque for infections such every bit hepatitis B or autoimmune disorders like Hashimoto'south disease, in which hives are common.

Hives Healthcare Provider Word Guide

Go our printable guide for your next healthcare provider's appointment to help you inquire the right questions.

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Summary

Urticaria (hives) is caused by an aberrant immune response in which fluids leak into tissues beneath the surface of the skin, causing them to bang-up. Symptoms include a raised, blood-red, itchy, welt-similar rash with well-divers borders.

Allergies and infections are common causes, but urticaria can also be triggered by cold, heat, force per unit area, vibration, stress, and even water. The location, timing, and look of the rash tin provide clues as to what is causing it.

Some cases take no known cause, particularly with chronic hives, which can persist or recur for months and fifty-fifty years.

Ofttimes Asked Questions

• What are hives?

  Hives (urticaria) are a common skin reaction that causes itchy welts ranging in size from small spots to blotches as large as a plate. They are often accompanied by angioedema, a similar condition that causes the swelling of deeper tissues.
  

• What causes hives?

  Hives occur when the immune system responds abnormally to a substance, disease, or environmental status and triggers the release of histamine into the bloodstream. This causes blood vessels to dilate and leak fluid into the middle layers of skin. Sometimes there is no known cause.

• What do hives look like?

  Hives cause reddish areas of raised tissues, often well-divers, that blanch (turn white) when pressed. Different a rash, which may or may non exist itchy, hives e'er crusade itchiness ranging from balmy to severe.
  

• How long do hives last?

  This depends on the cause. Hives frequently go abroad on their ain spontaneously and rapidly. Other cases may be persistent or recurrent. Chronic urticaria is defined as daily hives lasting for more than half-dozen weeks.
  

• What are common triggers for hives?

  Common triggers for hives include:

  • Nutrient allergies
  • Drug hypersensitivity
  • Airborne allergens
  • Contact allergens
  • Insect bites
  • Stress
  • Exercise
  • Environmental changes (like changes in temperature, excessive sun exposure, or farthermost vibrations)
  • Applying direct pressure to the skin (such as wearing tight clothing)
  • Certain medical conditions (like HIV or hepatitis)
  • Blood transfusion

• How do you get rid of hives?

  Depending on the severity, your doctor may prescribe over-the-counter or prescription antihistamines to reduce itchiness and swelling. Severe cases may require apply of a biologic drug chosen Xolair (omalizumab) that is approved for the treatment of chronic hives. Immunosuppressants like cyclosporine are also sometimes used off-label.
  

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Verywell Wellness uses but high-quality sources, including peer-reviewed studies, to support the facts inside our articles. Read our editorial process to learn more about how we fact-bank check and go along our content accurate, reliable, and trustworthy.

1. Siegfried EC, Hebert AA. Diagnosis of atopic dermatitis: mimics, overlaps, and complications. J Clin Med. 2015;4(5):884-917. doi:10.3390%2Fjcm4050884

2. Kanani A, Betschel SD, Warrington R. Urticaria and angioedema. Allergy Asthma Clin Immunol. 2018;14(Suppl 2):59. doi:10.1186/s13223-018-0288-z

3. Schaefer P. Urticaria: evaluation and handling. Am Fam Physician. 2011;83(9):1078-84.

4. Fine LM, Bernstein JA. Guideline of chronic urticaria across. Allergy Asthma Immunol Res. 2016;8(5):396-403. doi:10.4168/aair.2016.viii.5.396

5. Tang Due north, Mao MY, Zhai R, et al. Clinical characteristics of urticaria in children versus adults. Zhongguo Dang Dai Er Ke Za Zhi. 2017;19(7):790-5.

6. Ferrer Chiliad, Bastra J, Gimenez-Arnau A. et al. Direction of urticaria: not also complicated, not to unproblematic.Clin Exper Allergy. 2014;45(4):731-43. doi:10.1111/cea.12465

7. Stepaniuk P, Vostretsova K, Kanani A. Review of cold-induced urticaria characteristics, diagnosis and direction in a Western Canadian allergy practice. Allergy Asthma Clin Immunol. 2018;xiv:85. doi:x.1186/s13223-018-0310-5

8. Kim JE, Eun YS, Park YM, et al. Clinical characteristics of cholinergic urticaria in Korea. Ann Dermatol. 2014;26(2):189-94. doi: 10.5021%2Fad.2014.26.ii.189

9. Nobles T. Dermatographism. StatPearls [Cyberspace].

10. Kulthanan Yard, Ungprasert P, Tuchinda P, Chularojanamontri L, Charoenpipatsin N, Maurer M. Delayed pressure urticaria: a systematic review of treatment options. J Allergy Clin Immunol Pract. 2020 Jun;8(half dozen):2035-49.e5. doi:10.1016/j.jaip.2020.03.004

11. Harris BW, Badri T, Schlessinger J. Solar urticaria. In: StatPearls [Internet].

12. Ograczyk-Piotrowska A, Gerlicz-Kowalczuk Z, Pietrzak A, Zalewska-Janowska AM. Stress, itch and quality of life in chronic urticaria females. Postepy Dermatol Alergol.2018 Apr;35(ii):156–60. doi:10.5114/ada.2018.75237

13. Boyden SE, Desai A, Cruse G, et al. Vibratory urticaria associated with a missense variant in ADGRE2. N Engl J Med. 2016;374(vii):656-63. doi:x.1056/NEJMoa1500611

14. Park H, Kim HS, Yoo DS, et al. Aquagenic urticaria: a report of two cases. Ann Dermatol. 2011;23(Suppl 3):S371-4. doi:10.5021%2Fad.2011.23.S3.S371

15. Spickett GP, Stroud C. Does this patient with urticaria/angioedema have anaphylaxis? Clin Med (Lond). 2011;11(4):390-6.

16. Ring J, Beyer K, Biedermann T, et al. Guideline for acute therapy and management of anaphylaxis: S2. Allergo J Int. 2014;23(3):96-112. doi:ten.1007%2Fs40629-014-0009-1

17. Dabija D, Tadi P. Chronic urticaria. In: StatPearls [Internet].

18. Kayiran MA, Akdeniz N. Diagnosis and treatment of urticaria in primary intendance. Northward Clin Istanb. 2019;6(1):93-nine. doi:ten.14744/nci.2018.75010

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Source: https://www.verywellhealth.com/urticaria-signs-symptoms-1069422

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