what causes the tinny tatse in my mouth?!

Question: the taste buds on the back of my tongue are also inflammed
Answers:
It's probably copperish, not tinny. That's the taste of blood. Odds are, you have an infection, which has spread to your gums, which bleed during the day and when you brush. I would see a doctor for the swelling, or a dentist for the gums SOON. An infection there can spread to the veins in your neck.

Good Luck!

Other Answers:
seems the normal population of bacteria or microorganisms in the mouth cavity has been changed for some reason,try garggles with soda power,and use listerine

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