Doctor insights on:
No: These are two separate entities. It is often difficult to identify the cause of chronic hives, and less often for anaphylaxis. But unlike some other allergic phenomena, there is no progression from hives to anaphylaxis. The best step you can take is to see an allergist to try to understand why you're having hives. ...Read more
Yes: Allergy to the entire class of antibiotics called cephalosporins is indeed possible. That allergy would be the common part of the molecule shared by all cephalosporins and penicillins, the beta-lactam ring. ...Read more
Releasing histamine: Hives are due to a release of histamine in the skin, commonly due to allergy to foods, medicines, viruses, molds, animals, pollens, etc... Some people release histamine and get hives when exposed to cold temperatures, cold water, sunshine, stressful situations, etc... Other people with hives may have internal medical conditions such as chemical imbalances, intestinal parasites, etc... ...Read moreSee 1 more doctor answer
Allergy testing: Only physicians trained in the specialty of allergy, asthma ; immunology are trained in a monitored situation during residency to perform skin testing for ige-mediated allergy. Some ENT programs are adding this to their training. If you were skin tested by a non-specialist, consult a specialist, if you were skin tested by an allergist, it is likely that you are unusally allergic. ...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
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
Can a severe allergic skin reaction including: dermatitis, hives, eodema, erythmaderma cause new sensitivities to other chemicals to begin?
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
Sulfa allergy: Drug allergic reactions can take on many forms including: hives, swelling, blistering, dry itchy patches, non itchy red flat or slightly raised areas. To determine if a rash is related to a medication typically requires reviewing when a medication was started, when the rash started, other medications taken, infection being treated etc. There is no allergy test for sulfa. ...Read more
Yes: All vaccines have adverse reaction profiles much like medication we are taking or prescribed. The extent of severity is quantified and compared to a control or non treatment group. Reactions can be local and mild versus more systemic/body related. The varicella vaccine (aka chickenpox) is very safe. Allergies to egg whites-albumin is a contraindication to this shot (like mmr). ...Read more
Yes,it's mild: A eaction to chickenpox vaccine would occur about 5 days after the shot. The patient may get a little chicknpox-like rash around the site of the shot. It is not common, and not serious. The disease if your child is not vaccinate would cause much more uncomfortable symptoms than the possible side effects of the vaccine. So give your child the chickenpox vaccine! ...Read more
What are the most common eczema triggers? Could a severe reaction to poison ivy trigger an eczema flare after/in addition to the allergic rash?
Eczema Triggers: Eczema Triggers include Chemicals, Hot water, Overbathing, detergents, soaps, shampoos, perfumes, scented body care products, stress, pet dander, molds, dust mites, cockroaches, to name a few. Yes, a severe reaction to poison ivy could definitely trigger an eczema flare! Hope this helps! ...Read more
Allergic Rashes: There are different types of rashes seen with allergic reactions. There are rashes from contact to an allergan. These can range from just a few small bumps in the area of contact, such as being allergic to nickel in a ring. Another contact allergy poison ivy can progressively spread. Food allergies may start with hives but can quickly progress to dangerous swelling of lips, throat for some. ...Read more
Hives and angioedema: Most hives and angioedema are caused by allergic reactions however they can also be caused by reactions to medications or things like heat, cold or sunlight. A variety of infections, including viral or bacterial infections, or collagen vascular disorders can cause a very similar rash. ...Read moreSee 2 more doctor answers
Very rare: Nickel allergy and latex allergy. Latex is the number one, our gloves and elastics are made from latex. We use an alternative when allergy is present. Brackets and wires are made of metal alloys that contain some percentage of nickel. I check for this by asking what type of jewelry the patient can and cannot wear. Invisalign is an alternative, also titanium braces are available. ...Read moreSee 3 more doctor answers