Itching tongue , in some patient may be a sign of some allergy with food or any drink. Need to know little more about your problem such as
Is it associated with some swelling , fever or redness??
Is this happened first time or you have experienced such problem before as well??
Any new food item or drink you tried last night at dinner ???
Are you on any medication ??
Next Steps
Must visit dentist for further evaluation.
Health Tips
Some home remedies you can use to relieve itching in your tongue:-
-Drink a glass of cold apple juice
- yogurt with flax seeds
-May apply Alovera, raw honey or lavender oil to get relieve.
But above things only help if underlying cause is not associated with any serious health condition such as
diabetes, any viral or fungal disease , cancer etc.