sour taste in mouth all the time

I have been having a strange taste in my mouth, like sour apple almost all the time for several weeks now. I dont know what it could be or if I should be worried. In the last few weeks I have had no real change in diet. I have not been sick with a cold or anything, but I do get some infrequent nasal congestion. I brush my teeth regularly and have not had any dental issues. I feel like I just noticed this one day. I dont really notice it when I eat and I seem to notice it less when my mouth is closed. When I do notice it, it seems to be coming from the back of my mouth. I do drink way to much caffeine, much from diet sodas. When I first noticed this I thought it was just an after taste from the diet mountain dew.
I know this sounds ridiculous but what could it be? Hopefully not a sign of anything serious.

Oh, im 26 yo male, 6'1'', 215 lbs, no health conditions, office job

[Kevin Pho, MD]

GERD and post-nasal drips are the most common causes for symptoms like this.

Obtaining an upper GI series as well as treating GERD with PPIs can be considered.  If post-nasal drip is suspected, a sinus CT can be done to image the problem, as well as a nasal steroid spray, can be discussed with your personal physician.

A referral to an ENT or GI physician can also be discussed.  

Followup with your personal physician is essential.

This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.

Kevin, M.D.
kevinmd_

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