Hi,
Thanks for using this forum,
As per your symptoms it seems that the reasons could be
allergic reaction from some food or mouthwash, due to nutritional deficiencies,
fungal infection, biting the tip of the tongue and teeth grinding (
bruxism), may result from overbrushing your tongue, using abrasive toothpastes, overusing mouthwashes or having too many acidic drinks, such as lemon, due to
stress.
Drink more fluids, to help ease the feeling of
dry mouth, but avoid carbonated beverages.
Avoid spicy-hot foods.
Avoid acidic foods and liquids, such as orange juice, soft drinks and coffee.
Try different mild brands of toothpaste, such as one for sensitive teeth or one without mint
Take steps to reduce excessive stress.
Take care