Doctor insights on:
Allergic Reaction Rash
Anyone know how long after taking a new medicine that an allergic reaction (rashes, itching etc.) would occur?
See below: Most reactions start from the 1st to 4th dose of a medicine. Read more
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
Variable: Hives or urticaria may wax and wane then resolve within a day or 2 after ingestion or contact with a food allergen. However, poison ivy or nickel allergic contact dermatitis may take 4-6 weeks to eventually resolve. The time to resolution is also impacted by what medications are taken such as oral corticosteroids such as prednisone, which can decrease the time significantly. Read more
A few days: Rashes from something you ingest typically last for just a few days or less. The bigger question is what really caused the rash. People break out in rashes from time to time, and it's just human nature to blame the rash on something we ate in the last few hours. If the rash is continuing for more than a week, it probably has nothing to do with the echinacea; you should see your pcp to check it out. Read more
Time and meds: Most medication reactions will begin to improve within 48 hours after stopping the medication. To ease the symptoms of a drug allergic reaction, antihistamines such as zyrtec, Claritin (loratadine) or Allegra can help. On occasion oral steroids like Prednisone are needed. If the rash is blisters or progressing, then a doctor's visit is important for further evaluation and treatment. Read more
How long will an allergic reaction rash from keflex last? I was on the pills for 13 days before the dr finally said it was an allergic reaction
Benadryl (diphenhydramine) tabs take about 1 hour to start working to treat my allergic reaction (rash) Would Benadryl (diphenhydramine) IM be a faster alternative? Can I obtain an RX?
Depends: Benadryl (diphenhydramine) may help hives but not a rash which has lasted more than 24 hrs. IM Benadryl (diphenhydramine) gives you perhaps a 30-minute head start vs oral = not worth the cost or hassle. If you have throat swelling, you may need adrenaline and an allergy consult since this can be life-threatening. Read more
Have allergic reaction rash was given prednisone to take 60mg a day for 3 days, this seems like a lot. Do I need it or will they go away on their own?
High dose: There is no one correct dose for oral steroids, but most clinicians would dose according to the severity of the allergy or that particular person's previous response to oral steroids. 60 mg of prednisone is a high dose for some rashes such as hives but may be necessary for generalized allergic reaction like anaphylaxis. IDouble check with doctor to make sure that is the correct dose. Read moreSee 1 more doctor answer
Allergic reaction: If it is true allergic reaction, then avoidance of the allergen will curb the reaction hopefully. Using an anti-allergy preparation such as Benadryl (diphenhydramine) at night might help. Hydrocortisone cream once to twice daily on the affected areas excluding eyes may be tried for no longer than 2 weeks at a time. If those fail, definitely see a doc. Read moreSee 1 more doctor answer
Possible to have latex condom allergic reaction (rash/dry/slight itch) 12-24 hours after sex every time, if no reaction after masturbation w condom b4?
Are there any over-the-counter products I could take to help with an allergic reaction (rash of red itchy red bumps all over my body?
I have a bleeding sore in the crack of my buttocks as a result of a allergic reaction rash from wearing a pad. Is it best to keep it covered to heal?
Yes: Sores heal better if covered. Also remember to keep it clean. Read more
Have been taking macropen for 6 days and now have a fuzzy feeling on tongue. Is this possibly an allergic reaction. No rash or other signs/. Thank you?
Fuzzy tongue: No that's a FUNGAL over growth on the tongue from knocking out all the bacterial commensals in the mouth from 6 days of PEN. If you have normal T cells and if the overgrowth not too bad you can do nothing AND as the bact come back the fungi will go down. You can also get ANY anti-fungal OTC vaginal supp and suck one a day for 5 days and that will nail it too. Next time take antifungal Rx simultan Read more
How can I tell the difference between a rash caused by allergic reaction and rash caused by flesh eating bacteria?
Red versus dead: An allergic reaction is manifested by a raised red firm sometimes itchy but usually limited area whereas flesh eating bacteria create a rapidly spreading area of redness with fever and pain. The skin may blisters itch fluid or air bubbles or become grey/black. Read moreSee 1 more doctor answer
I wotre a knee brace that was too tight. On a knee that was already having an allergic reaction. The rash has spread all over my body? Help?
- Talk to a doctor online
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