Thank a lot for the detailed information.
There are numerous causes of abnormal taste, many of which are usually temporary.
Common cold, flu, a nasal or sinus infection
Allergy to food
Vitamin or mineral deficiency
Dry mouth (xerostomia) from various causes
Smoking, dental carries,
Diabetes or thyroid disease
Depression, Migraine headache,
Certain medications, Chlorhexidine oral rinse
Damage to the taste nerves from various neurological condition which needs urgent evaluation.
By analyzing you history it may be due to some allergy to some food like pineapple or any. If it is so it will improve by its own way.
You may take multivitamins if there is at all any deficiency.
Take plenty of water sometimes dry mouth may also feel like that though it is unlikely in your case.
If it does not improve consult your physician for detailed examination and investigation.
If you need further clarifications, I will be happy to explain you.
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