A member asked:

Can allergies cause congestion that last over a month and red itchy eyelids off and on? it is a possible to develop a cat allergy all of a sudden?

A doctor has provided 1 answer
Dr. Al Hegab answered

Specializes in Allergy and Immunology

Not all of a sudden: it has been lurking for some time, your body tolerated the exposure for some time, till at a point it won't take it any more, hence the development of the symptoms, and yes allergies can cause congestion and red ithcy eyes for weeks and months, check aaaai.org or acaai.org for an allergist/immunologist in your area, goodluck

Answered 2/4/2015

3.3k views

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