My child is 4 has low fever went to er doc said its throat infection red raised bump on back of tongue but no pain would love second opinion.

Fever and tongue: Most fevers in children are caused by cold viruses. Some of them will cause a bump on the top, back and sides of the mouth. Most tongue bumps in children are not signs of infection. Perhaps they are taste buds, perhaps a sign of a benign condition called geographic tongue. The only reason to worry about tongue lesions is if they are white papule. Only then do you need further checking.