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Doctor insights on: Allergies Vs Irritants

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Dr. John Chiu
2,265 doctors shared insights

Allergies (Definition)

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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Can chronic post nasal drip no allergy b caused by an irritant, something that a person's nose is sensitive to? Ex. Car exhaust, air pollution, perf

Can chronic post nasal drip no allergy  b caused by an irritant, something that a person's nose is sensitive to?  Ex. Car exhaust, air pollution, perf

Yes: It is called vasomotor rhintis and a nasal spray can help. You should be tested by an allergist to rule out environmental allergies first. The two conditions can coexist. ...Read more

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What can cause chronic bronchitis with normal lung function test, no relation to allergy, infectious disease, tobacco and other chemical irritants?

What can cause chronic bronchitis with normal lung function test, no relation to allergy, infectious disease, tobacco and other chemical irritants?

50% of us: have asthma that does not make us go to the doctor on a given year. Mostly, I think this is mis-diagnosis of not asthma, but actually inflammation due to a viral illness which varies from days to over a month. Asthma meds (especially monteleukast) fix it. ...Read more

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Can the irritant in poison ivy travel through the air? Now that it is spring, I have been having a lot of issues with allergies because of all the pollen in the air. However, the other day i noticed after a sneezing fit that i was developing an itchy rash

The : The answer is yes, but only under circumstances like burning it. You may have come into contact with it thru other means like a pet or something else that came into contact with it, if it is really poison ivy. The rash should be seen by a medical person as it may not be poison ivy or any contact allergy. ...Read more

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What can be prescribed to relieve food allergys?

What can be prescribed to relieve food allergys?

Emergency Rx: The best way to diagnose food allergies is by history, or perhaps an elimination diet, and the best treatment by far is avoidance as realistically required. My egg allergy is fairly mild but my other family members have had to carry Epinephrine needles as they are more severely affected. No rx / pill / supplement will make food allergies just go away -- being proactive is best. ...Read more

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Do children grow out of allergies?

Yes: Not all of the food allergies are created equal. Food allergies like dairy, egg, wheat tend to be outgrown. Tree nut and peanut are less likely (although recent studies suggest that 20-30% outgrow the peanut allergy). Environmental allergies tend to "grow on you" with time. Note: the allergy test may remain positive despite the child having outgrown the allergy. Consult with an allergist. ...Read more

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How can I treat my allergies?

How can I treat my allergies?

Nasal sprays not OTC: For seasonal allergies, the most effective options are the steroid or antihistamine nasal sprays, available by prescription. Not only do they work the best, but they are technically local therapy as negligible amounts enter the bloodstream. The OTC nasal sprays can cause rebound symptoms, which the prescription versions do not. ...Read more

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How can I understand what allergies my child has?

Good question...: Skin rashes are usually food or contact allergy, cough and nasal allergies are usually to airborne allergens (dust, pollen, animal dander). For food allergy, observe what seems to make it worse -- food diary is a useful tool. For airborne, the rule of thumb is, tree pollen in the spring, grass pollen in the summer, weed pollen in the fall, dust and animal dander year round but worse in winter. ...Read more

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What causes allergies?

What causes allergies?

Genes + environment: Noses run in families - if both parents have allergies the chance that their child will be allergic is 80%. If neither parent is allergic the child's risk is10%. Exposure to urban pollutants like diesel exhaust, cigarette smoke, & antibacterial hand cleansers upset the ecological balance between our immune system & beneficial microorganisms. With both factors present allergy is more likely. ...Read more

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