Hello, I think that you are suffering from transient lingual papillitis and the most common causes for it can be stress, acid reflux, hormonal imbalances, acidic or sour food, smoking, and local trauma (direct physical irritation) of the tongue. It does not have any specific treatment but you can do supportive therapy to relieve the symptoms. You should start gargling with numbing mouthwash containing Lignocaine. You can also take anti-inflammatory painkiller like Ibuprofen, suck ice pops, avoid hot and spicy food and take a soft and bland diet. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Honey Arora