Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern..
As per your complain there is a group of papillae at the back of the tongue known as Circumvallate Papillae that are arranged in a typical v shape and are large in size as compared to other papillae throughout the tongue so they can be visible as elevated over the back of the tongue..
In case if they are also red then it can be due to burning with some hot food or can also be die to
throat infection or
allergic reaction to some food or medicine..
But in case if your son is completely active and does not have any problems like pain or anything else you need not to worry as it may be nothing serious..
I would suggest you to give him a
soft diet and avoid spicy and hot foods..
Feed him with plenty of fluids..
Keep a watch over the papillae and in case if there is swelling or increased
redness consult a Pedodontist and get evaluated..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora..