home *** CD-ROM | disk | FTP | other *** search
- $Unique_ID{BRK00249}
- $Pretitle{}
- $Title{What Causes Hives?}
- $Subject{hives causes treatment Ill Defined Symptoms symptom urticaria Drug
- allergies allergy penicillin Aspirin additives sulfites hypersensitivity
- antigen antigens allergen Skin allergens swelling throat cramps diarrhea
- vomiting Sweating anxiety lesions antihistamine corticosteroid}
- $Volume{N-20}
- $Log{
- The Process of an Allergic Reaction*0001201.scf
- Histamine Release Causes Allergy Symptoms*0001202.scf}
-
- Copyright (c) 1991-92,1993 Tribune Media Services, Inc.
-
-
- What Causes Hives?
-
-
- ------------------------------------------------------------------------------
-
- QUESTION: This may seem like a trivial question, compared to some you answer,
- but I hope you will devote some space to it. What causes hives?
-
- ------------------------------------------------------------------------------
-
- ANSWER: It's not a trivial question at all, as you will see. Hives,
- technically termed urticaria, can be caused by a wide variety of factors that
- involve either internal or external conditions. In many cases, the triggering
- agent can remain elusive, but fortunately, hives usually clear up within a few
- days and leave no evidence of damage to the skin. Furthermore, there are many
- medications currently available that help control the symptoms.
- Drug allergies are one possible cause of hives, with penicillin being the
- most common agent. Hives will usually occur within thirty minutes of the
- initial dose, making the source identification fairly simple. However, drugs
- that cross-react with penicillin can delay the onset of a hives outbreak and
- patients can frequently develop an allergic reaction to a drug whose prior
- exposure did not cause a reaction, thus making positive drug identifications
- quite complicated.
- Aspirin is another drug that causes hives, though it is frequently
- overlooked because patients rarely think to mention it when questioned about
- medications they may be taking. Drug additives, such as sulfites that are
- used as stabilizers in many liquid medications, can also trigger hives. And,
- in some cases, patients can develop a hypersensitivity to an allergy shot
- antigen which will result in hives as well.
- Skin sensitivity is another source of hive outbreaks. After a walk in a
- field, allergens such as pollen can penetrate the skin's surface and cause
- welts. The licking or scratching of the skin by a pet can cause hives as
- well. Sensitivity to certain materials, such as rubber gloves, can create
- local reactions, as can touching certain foods like raw shellfish which may
- cause no reaction when eaten in a cooked form. In most cases where skin
- sensitivity is the culprit, the hives will develop within minutes and resolve
- in a few hours.
- Food allergies are yet another common link to hives. Peanuts, fish,
- shellfish, milk, and eggs are the most common offenders, and usually produce
- additional symptoms such as an itching in the mouth, a swelling in the throat,
- cramps, diarrhea, and vomiting which make identification readily obvious.
- However, in cases where the food allergy is not clear, testing should be done
- before limiting a patient's diet unnecessarily.
- Certain external factors can contribute to hive outbreaks as well.
- Friction from tight clothing can trigger hives to develop along lines of
- pressure, as can sudden exposure to cold air or water. Sweating induced by
- heat, exercise, or anxiety can also produce skin lesions.
- Whatever the cause, treatment for hives is readily available. Avoiding
- offending food or drugs will usually prevent repeat attacks, but in chronic
- cases, a daily antihistamine or corticosteroid may be advised. Patients
- suffering from hive attacks should still bear in mind that even though the
- condition is a puzzling one, it is not permanently damaging.
- Sometimes the most elementary questions have complicated answers, and
- common problems, like hives, have enormous implications to our health and well
- being. That's why I never mind researching out even the simplest questions
- you ask.
-
- ----------------
-
- The material contained here is "FOR INFORMATION ONLY" and should not replace
- the counsel and advice of your personal physician. Promptly consulting your
- doctor is the best path to a quick and successful resolution of any medical
- problem.
-
-