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Doctor insights on: Allergy To Antihistamines

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Can antihistamines help allergic shiners?

Can antihistamines help allergic shiners?

Possible: Allergic shiners are caused by nasal congestion that results in passive congestion of a venous plexus that is under the eyes. So using an antihistamine to help alleviate allergic inflammation and congestion of the nose may be helpful. ...Read more

Dr. John Chiu
2,628 doctors shared insights

Allergies (Definition)

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


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Allergies to solu-cortef?

Allergies to solu-cortef?

POssible: Steroid allergies are very unusual but have been reported. ...Read more

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Will immunotherapy help allergic shiners?

It can: Allergic shiners often improve with allergy treatment but not always. ...Read more

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Would allegra (fexofenadine) prevent allergic skin reactions to animal fur?

Would allegra (fexofenadine) prevent allergic skin reactions to animal fur?

Pet allergy: Allegra should tame down your reactions to pet fur, as it should also improve your nasal symptoms. ...Read more

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If i've conjunctivitis allergy, can it heal by allergy injection therapy ?Tried allergy meds : allegysal, patanol (olopatadine) and avil, Claritin loratadine, please help

If i've conjunctivitis allergy, can it heal by allergy injection therapy ?Tried allergy meds : allegysal, patanol (olopatadine) and avil, Claritin loratadine, please help

Yes: Treatment of allergic conjunctivitis starts with eliminating or avoiding the allergen as well as rinsing the allergen from your eyes with plain water (reduces the allergen load). Allergy shots can help as can oral allergy meds. There are eye drops that help a great deal also. Steroid eye drops are very effective but are not used long term due to risk of glaucoma and cataract. ...Read more

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Can montelukast become an alternative of allergens immunotherapy for perenial allergic rhinitis ?

Can montelukast become an alternative of allergens immunotherapy for perenial allergic rhinitis ?

Not really: I suggest 3 steps to controlling allergies : 1) avoid the things you are allergic to. 2) take medications to control the symptoms. 3) get 'allergy shots' (immunotherapy) to teach your body to not be "allergic" to those things (immune tolerance). Using a leukotriene antagonist control the symptoms some, but it is not the most effective medication, and is not an equal alternative to immunotherapy. ...Read more

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Can antihistamines help itching not related to allergies?

Can antihistamines help itching not related to allergies?

Yes and no: Antihistamines, as their name implies, effectively treat itching caused by histamine released from immune cells. This includes allergies, but also other disorders that cause histamine release, like chronic hives or mastocytosis. Itching from other causes, like liver disease or disorders of the nerves, typically does not respond to antihistamines. Talk with your doctor for more info. ...Read more

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Symptoms of allergic reaction to antihistmine ?

Symptoms of allergic reaction to antihistmine ?

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 more

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Can Benadryl (diphenhydramine) help a swelling and hive reaction (itching) allergic reaction to penicillin?

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

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Which allergy medication would you suggest for nasal allergies?

Which allergy medication would you suggest for nasal allergies?

Numerous: Fortunately for allergy sufferers there are numerous safe and effective allergy medicines both over the counter and prescription. Check with your doctor or pharmacist for recommendations if you are looking for over the counter medications. When otc meds do not help it is time to see a doctor for additional evaluation and treatment. ...Read more

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Will Claritin (loratadine) allergy controller stop or at least help with allergy rash?

Will Claritin (loratadine) allergy controller stop or at least help with allergy rash?

Depends: The term "allergy rash" is non-specific. If it is poisen ivy or ecxema, a rash characterized by dry, scaly patches where itchiness is a major symptom then antihistamines such as Claritin or Benadryl (diphenhydramine) may be helpful. Zyrtec, in my experience, is actually better for itchiness. In more severe cases, topical or oral corticosteroids may have to be used. ...Read more

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Will famotidine help with the itching (pollen allergy)?

Will famotidine help with the itching (pollen allergy)?

No: it antagonizes H2 receptors in the stomach, thas helping decrease acid production, though an antihistaminic, but doesn't help the itch, H1 blockers, as diphenhydramine do help against the itching ...Read more

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Do antihistamines help with food allergies?

Do antihistamines help with food allergies?

Yes: They can help alot depending upon what you are allergic to. Some food allergies, such as peanut, even oral antihistamines are not strong enough to prevent anaphylaxis and avoidance is the only "treatment" in wide spread use. Milder allergies can be improved with antihistamines. Check with your allergist. ...Read more

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Will Benadryl (diphenhydramine) work for fish or shellfish allergies?

Will Benadryl (diphenhydramine) work for fish or shellfish allergies?

Fish allergies: Benadryl (diphenhydramine) could work but with fish and shell fish allergies if it is bad best thing is to avoid eatiing it. Some prepackaged foods have shell fish products in them so please read labels before you consume these. It may be prudent to carry an epi-pen for you and you can have your doc prescribe one for you to carry with you at all times. ...Read more

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Can zyrtec (cetirizine) work with food allergies?

No: No, zyrtec (cetirizine) does not work to prevent you from getting an allergic reaction to food or to treat food allergies. Food allergies can present with different clinical symptoms and can be life threatening. Currently strictly avoiding the food is the only treatment. Only a few centers do food desensitization. If you have real food allergy, you should see an allergist specialist. ...Read more

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Could loratadine treat indoor allergies, or only outdoor allergies?

Could loratadine treat indoor allergies, or only outdoor allergies?

Both: Loratadine (brand name claritin) is fda approved for seasonal allergic rhinitis (hay fever) and hives. However, it is also effective for treating allergies caused by indoor allergens such as animal dander and dust. ...Read more

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Does loratidine help with allergic rhinitis ?

Does loratidine help with allergic rhinitis ?

Yes : Should help. Please follow all the directions on the label of the mediation you use and please update your medic rom profile. ...Read more

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Benadryl (Definition)

Diphenhydramine is a sedating antihistamine which is a kind of antihistamine type drug (common ...Read more


Dr. Paul Carter
642 doctors shared insights

Antihistamine (Definition)

Sedating and non-sedating antihistamines prevent and treat allergic reactions, and are ...Read more