Doctor insights on:
Onion Allergy Hives
Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more
Varies: Allergic reactions varies with individuals.Some can consume cashews, while to others they are toxic.Reactions can be mild or severe. Mild reactions include nausea , vomiting, diarrhea. Skin rash and itching on the skin.The eyes , roof of mouth and throat may itch.Severe reactions include difficulty breathing, swelling to face and throat.The most dangerous is anaphylaxis.This can be fatal ...Read more
Can Benadryl (diphenhydramine) help a swelling and hive reaction (itching) allergic reaction to penicillin?
Depends: on the reaction, if just hives and itching, yes benadryl (diphenhydramine) can control it in the right dosage, after discontinuing the offending drug, but if more severe symptoms/swelling you need medical attention with the possible addition of epinephrine and probably steroids, ...Read more
Yes: Lobster is related to shrimp and crab. Each of these is a common cause of life threatening allergy. If you are having symptoms after eating any of these you should be evaluated by a board certified allergist. Do no eat any shellfish until you have been cleared. ...Read more
What is the best allergy medication for seasonal allergies like pollen, dust, ragweed, hay fever, dogs, cats, hamsters etc?
There are a few: Not one medicine is better than another....Everyone's system is different...Some people get better with allegra..Others with zyrtec..Others with Claritin or even benadryl (diphenhydramine). These are now over-the-counter...Try some and read the labels. If you don't feel better, see a board certified allergist (www.Acaai.Org). Good luck. ...Read moreSee 1 more doctor answer
Identify & medicate: With any allergic reaction, it's important to identify the trigger and avoid. Other antihistamines can be tried and these include claritin, clarinex, allegra, zyrtec and xyzal (levocetirizine). Under the direction of a physician, higher doses may be needed. If the reaction is severe, seek care, as oral steroids may be necessary. ...Read moreSee 1 more doctor answer
Hay fever reactions?: While it is possible to see a variety of symptoms with seasonal allergies, such as sneezing, nasal congestion, eye redness, swelling and wheezing, a true anaphylactic reaction is rare. The severe, sudden onset of allergic symptoms associated with anaphylaxis might be seen as a reaction to an allergy shot to treat hay fever, but more commonly is seen with foods, medications, and insect stings, . ...Read moreSee 1 more doctor answer
Keep pollens away: Eliminate exposure by using facial mask, high efficient hepa filter and vacuum your carpet more often. Use AC at home and when you drive in bad allergy season. Besides, there are OTC oral antihistamines, decongestants, and inhalers available. If not improve, talk to your doctor or allergy specialist for more potent treatments including nasal antihistamines, steroid inhaler and immuno-therapy. ...Read more
That's curious....: Allergic reactions are when the body's immune system detect something that it recognizes as a foreign substance (ingested, contact through skin, food or medicine, or in the case of auto-immure diseases, it's own cells). One reax is to mobilize cells that secrete anti-histamines to fight the allergic reax. So, allergic relax to antihistamine would be very unusual. Let detective doc sort this out. ...Read moreSee 2 more doctor answers
Yes: Yes hives can be a result of allergy to foods, inhalant allergen or medications. However in many chronic cases (almost 70-80%) an exact cause cannot be detected. It can be very frustrating to the doctor and patient and can be very challenging to find a cause and get it under control. ...Read moreSee 1 more doctor answer
Several causes: The most common causes of hives are allergy, autoimmunity, and physical stimuli. Foods or drugs can cause hives - peanut and shellfish are common food allergens, and Ibuprofen and penicillin are common drug allergens. Some hives are due to physical stimuli such as cold, heat, pressure or stroking of the skin. ...Read more
Yes if when with dog: Any severe allergy can cause hives in the allergic person, so yes, hives could be due to a dog. More people are allergic to cats than are allergic to dogs, by a large percentage, but some people have life- threatening dog allergies. Severe reactions can include eye swelling, throat- closing, coughing and asthma, and shock, as well as skin rashes including hives. ...Read moreSee 1 more doctor answer
Antihistamine: It depends on what the cause for your hives may be. Unfortunately, although hives can usually be controlled with antihistamine, we often can't find the cause for them. If the hives have lasted over 6 weeks, see an allergist. Otherwise, keep on scratching if otc antihistamine fails. ...Read more
What are the causes of daily hives. I know its an allergy to something but having no luck with testing.?
Chronic urticaria: Sounds like you have chronic urticarial. While allergies may play a role of causation in many of these cases, others are caused by environmental circumstances - hot or cold environment, stress, or other non-allergic conditions. Still best to work with allergist to find out what your triggers may be and explore alternative options for treatment. ...Read more
I break out in very bad large hives. Itch terribly. I have been allergy tested, all neg. What may b cause?
Damn hives: Most people that have chronic urticaria, hives lasting more than 6 weeks, have ciu, chronic idiopathic urticaria. Allergy is probably responsible for only 5 - 10% of ciu. Recent data suggests some chronic hives are autoimmune and occasionally they can be a marker of other systemic diseases. A good history will usually direct evaluation if any. Controlling medications reason for allergist consult. ...Read more
What makes hives come out, and do the different types of allergies cause different sizes or different types of hives?
Broke out into hives, maybe 40 over body. Its been 2 days. Should I be worried and see a Dr? Or just take OTC allergy meds and it should go away?
Depends on trigger: Urticaria (hives) is common, affecting up to 20% of the population. Acute hives is defined as periodic outbreaks of red, raised itchy lesions that resolve within 6 weeks. Common viral and bacterial infections can trigger an outbreak, however medications, foods, and insect stings can also cause acute hives but have the potential to lead to more serious complications. ...Read more
I get hives everyother day and I have been tested for allergies but they found none, the dr says he can't help me any further. Is there anything else?
Yes: Although a cause for chronic hives is often unknown, a majority of the hives can be controlled with medications and other treatments. Allergy skin testing is rarely helpful in evaluating chronic hives and thus your negative tests were not unexpected. Consult an allergist and in the meanwhile try taking your antihistamine up to 4 x daily regularly. Don't despair. ...Read more
Allergic shiners: Those dark circles under the eyes are commonly called allergic shiners. They are due to back up of blood in the small blood vessels due to significant nasal congestion. It takes a while, but with treatment of the nasal congestion, the "allergic shiners' will gradually improve. Hive are usually treated with antihistamines and finding the cause of the hives so avoidance measures can be done. ...Read more
Subtle: hives can occur as part of an allergy syndrome. people with chronic hives or who have an inborn low threshold for hives have difficulty differentiating simple hives from drug allergy. If the drug reaction is IgE-mediated, or occurs via a similar pathway without IgE, then one would expect additional symptoms other than hives (breathing problem, dizzy, nausea, swelling, headache, etc) ...Read more
All of them.: If someone has hives that are consistent with allergy, they may be tested to most of the food allergens if it is unclear which foods are the likely culprits. However, frequently people that have hives due to allergy have a pretty good idea which food or foods may be the cause. Most common food allergens are milk, egg, wheat, corn, soybean, peanut, tree nuts, and shellfish. ...Read moreSee 1 more doctor answer
Anaphylaxis perhaps: That's the name for severe allergic reactions. Any reaction that is very severe can progress to life-threatening symptoms like throat closing, hoarseness, chest tightness, asthma, or circulatory collapse (shock). Skin manifestations like hives are not usually dangerous; just uncomfortable and unsightly. ...Read more
Depends on trigger: Urticaria (hives) is common, affecting up to 20% of the population. Acute hives is defined as periodic outbreaks of red, raised itchy lesions that resolve within 6 weeks. Common viral and bacterial infections can trigger an outbreak, however medications, foods, and insect stings can also cause acute hives. An Allergist might determine cause of hives without testing, but depends on clinical history ...Read more
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