A member asked:

Can post nasal drip be year round from allergies ? on 10th week of allergy shots still got pnd.got red veiny lines in throat ent seen i seen too 2 yea

A doctor has provided 1 answer
Dr. John Chiu answered

Yes: Many allergens (usually indoor allergens) are perennial . Depending on whether you are on the traditional or cluster schedule with allergy shots, it takes from 3 to 12 months for most to obtain relief (20% people don't respond to allergy shots at all). The presence of sinus infection may also lead to post-nasal drips.

Answered 9/19/2018

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