###Human: There are red patches on the tongue. Why? ###Assistant: Hello. These patches are related to vitamin B deficiency and gastric discomfort. Sometimes, they also have superadded infection of bacterial or fungal origin. I would advise you to start a Multivitamin syrup, deworm the child and apply Candid mouth paint for 4 to 5 days. Syrup A to Z 5 ml once daily for 30 days, syrup Zentel 10 ml single Stat dose, Enterogermina suspension 5 ml twice daily for three days. Candid mouth paint local application for 4 to 5 days.