phlem at back of throat

I have tried to stay off anything dairy for the last 17 years as I was told by my other half that my breath would go off after eating milk products. I stopped eating milk products (or tried to as there is always dairy hidden in some foods that are processed) and my breath improved. I have been using soy for many years. But I have noticed lately even though I am staying off dairy my breath is occassionally bad, I am getting phlem draining at the back of my nose all the time and thicker phlem at the back of my throat and I am always swallowing it. My phlem is always thick to spit out, never clear. I would like to know why my breath is sometimes off and why I always have phlem running down the back of my throat. My teeth and gums are in excellent condition. I have used nasal sprays which don't help as they only disguise the problem. Is there anything that can fix my phlem prob which I am sure is causing the breath problem.
Many thanks.

[Dr_Aparna]

Hi,
The medical term for bad breath is halitosis.
Chronic halitosis is a condition in which a person produces an offensive odor from their oral or nasal regions and they’re unable to eliminate it through normal oral hygiene techniques, such as flossing or brushing.
Since your teeth and gums are in excellent condition there could be medical problems to consider such as allergies, sinus congestion or post-nasal drips, nasal polyps, and xerostomia which is a dry mouth condition.
So I suggest that you check with your physician after consulting your dentist.
The post-nasal drip you are having is indicative of sinusitis usually.

[Hoppy302]

Thanks for your advice. I will go see my physician asap.

[sniffilus]

I have all the symptoms of halitosis except for the bad btreath. My oder seems non offensive to all I ask (even the honest ones) but I do have xerostomia and have been referred to oral path for saliva replacement therapy. Any advice what are the true underlying causes of chronic xerostomia? Also my tongue is coated white and I postnasal drip.
Thanks for the help

[sniffilus]

sorry.

I have all the symptoms of halitosis except for the bad btreath. My oder seems non offensive to all I ask (even the honest ones) but I do have xerostomia and have been referred to oral path for saliva replacement therapy. Any advice what are the true underlying causes of chronic xerostomia? Also my tongue is coated white and I postnasal drip.
Thanks for the help