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
Timing: It depends on the timing. The contact with the allergens, either through skin or oral, usually happens days or weeks ago. Person's recall history is crucial. Tests are unreliable or not available. ...Read more
It would depend on what triggered the rash and what it looks like and your symptoms. Best to have a health care professional see the rash to determine the type. ...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
Days to weeks: Can last days to weeks. Itching usually goes away within a week. But lesions from rash can last several weeks before they completely fade. ...Read more
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 more
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 more
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?
Latex allergy: You are exhibiting symptoms of latex allergy, and yes they can be secondary to condom use. You should use sheep skin condoms to avoid contact with latex, but careful they break easily. ...Read more
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
Wants to know if any STDs cause a rash on the face resembling a mild allergic reaction. Rash only on face it is not raised. Using clearasil (benzoyl peroxide) face wash?
Yes, syphilis: Can cause rash, either in primary or secondary stage. If you are in a high risk category, I would get tested for it. ...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?
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?
My son had an allergic reaction (severe rash & hives) to a supprelin implant. Is it likely he will react to lupron-depot too?
Maybe...but unsure.: Supprelin la (histrelin) is a Histrelin Acetate implant; whereas Lupron depot is a Leuprolide Acetate suspension. Obviously there is worthwhile concern on your part about this alternative therapy for central precocious puberty in that both medications act to suppress development of puberty artificially. Regardless, the best source of information on this matter is your son's endocrinologist. Contact her today. ...Read more
I've had an allergic reaction (skin rash) to a dose increase of sertraline. The rash is on my face, neck, chest, back and arms. I took a full 25 mg dose 1x and woke up with a slight rash on my face. Took a 2nd 25 mg dose and the rash is now everywhere
Could a manicure cause itching in throat and all over body- no rash. Allergic reaction? No rash or redness at the nails or hands or feet though.
Real or not real?: I wonder if you have inhaled the dust from the filing of the nails. This dust can be dangerous. Consider changing salon to one with good ventilation and extraction system. ...Read more
My wife seems to be having a bad allergic reaction. She has rashes all over her body and is itching badly. What is the best way to alleviate this?
Stop the offending: Cause if known. Also reasonable to take short acting antihistamines like Benadryl (diphenhydramine) or longer acting ones like Claritin or Zyrtec. If the rash is severe enough and/or the itching is not alleviated than over the counter steroid creams may be beneficial. Of course if symptoms do not improve or worsen a trip to the doctor may be in order for a definitive diagnosis and/or stronger prescriptions. ...Read more
Absolutely.: Certain rashes are definitely not related to allergies; diagnosis starts with the appearance. This is where a knowledgeable, experienced diagnostician is key. Many viruses do, too, and some are quite itchy. So do medications, too, and continuing to take the drug may be risky. Better get checked out. ...Read more
I got the Depo-Provera shot this morning and within an hour I had n allergic reaction to it. (rash and hives) why would it happen? Is it still effective? Should I look for a different birth control?
Depo shots: Yes look for another. Allergy occasionally happens to depoprovera injections or something else that they mix in with them such as lidocaine. ...Read more
Patch test: You can check just about any product for skin sensitivity/reaction/allergy by doing a patch test. If you place a dab of the material on the fabric part of a bandaid & place it in a location where it won't be disturbed. (back of a baby or underarm of older kid) leave it on overnight, if no reaction within that time frame the product is likely safe to use over long periods. ...Read more
My dad has a rash all over his body he has tried allergex thinking it was an allergic reaction but the rash became worse, what could this be?
Missed 2 days of my liquid amoxicillin for strep. Just took a dose. Would an allergic reaction such as rash or anaphylaxis happen? I did 5 days of it.
In may. After amox. Itchy macularpap rash. Drs. Believe allergic reaction. Now where rash was is lighter spots. Leprosy? Hiv? Cancer? No longer itch
I need to know if this rash is a heat rash, allergic reaction or something else since it happened after I had my blood drawn today?
Need more info:
Where is the rash? What does it look like?
If the rash is only at the site near the needle puncture, you may be allergic to the solution applied to disinfect the skin or to the bandaid that was applied after the needle puncture. If the rash is elsewhere, then it is not likely to be related to having blood drawn. ...Read more
I've been taking 2 amoxicillin pills everyday for 5 days and had an allergic reaction. I have a rash all over my body, how long will this last?
Days: Typically drug allergic skin reactions such as hives or pinpoint rashes will begin to improve within 2 days of stopping the drug. The rash will then gradually improve over the next several days. With treatment, the course may be shortened and symptoms milder. Be sure to let your doctor know what is happening! ...Read more
How long until I see the effects of prednisone for an allergic reaction to cephalexin, severe rash?
Re: severe poison ivy rash/allergic reaction of skin - How long does it usually take for a Kenalog shot to kick in and symptoms to start subsiding?
Define "kick in": You can usually expect a reduction in the intensity of itching within 24 hrs. Swelling may take a bit longer. The skin rash will take a week or two to fade whether you have the shot or not. There are products like IVYDRY or Benadryl cream that seem to help some. I avoid calamine lotion as too drying and stinky. ...Read more
How long after taking Azithromycin would an allergic reaction happen? Developed a rash on elbows day after I finished the antibiotics. Related?
Unrelated: Drug rashes can appear within minutes to hours, a day is kind of a long period. If the rash is spreading or bothersome, call or see your doctor ...Read more
The pharmacist gave me a generic facial cream instead of the brand name I needed. Having allergic reaction on my face. Rash, itch, peeling, burn.????
Stop: Topical hydrocortisone cream may help but if problem is severe talk to your doctor to get something more potent. Since generic is similar to brand based on only the active ingredient, the rest may be quite different. You must have become allergic to one or more of the ingredients in the makeup of the cream or have newly become sensitized to the active ingredient itself, brand or otherwise. ...Read more
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