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
Most bumps and blotches on a newborn baby are harmless and clear up by themselves. By far the most common skin problem in infants is diaper rash. Diaper rash is an irritation of the skin caused by dampness, urine, or feces. Most babies who wear diapers will have some type of diaper rash. However, there are other skin disorders that can cause rashes. These are usually not serious unless ...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
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
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 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
Benadryl tabs take about 1 hour to start working to treat my allergic reaction (rash) Would Benadryl IM be a faster alternative? Can I obtain an RX?
Depends: Benadryl may help hives but not a rash which has lasted more than 24 hrs. IM Benadryl 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
Essentially allergies occur when your immune system goes crazy and decides to has to fight against things it should be ignoring. The immune system of people without allergies simply ignores the pollen in the air or the dander on their cat while an allergic person's immune system creates cells to fight against the pollen or dander. The allergic reaction causes the ...Read more
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