If your tongue is sore more than 2 weeks, you should consult your dentist because it might be a symptom of underlying conditions like neuralgia, vitamin deficiency, Moeller’s glossitis, etc. Don’t worry. It occurs for some people but in most cases, sore on the tongue is prompted by tongue injuries, mouth ulcers, yeast infection, allergic reaction from foods, medicines. https://www.dramarnathansdentalcare.com/sore-tongue-remedies/