Dear Abduly karim thanks for posting your query on Healthcare Magic Fever in this age group can be due to many conditions but common are viral infections, diarrhea(enteritis or gastroenteritis), malaria, dengue, Typhoid etc. Fever require evaluation and must be treated according to cause. Most viral illnesses are self limiting require its own time. Other aspect to deal with fever in this age group is to control temperature directly because high temperature is definitely harmful to child and sometime leads to fits what we call it febrile seizures. Do not panic control temperature with the help of medication and cold sponging all over body by completely exposing (may cause discomfort to child). Do Not cover him by blanket. Treatment of diarrhea may or may not require antibiotics BUT correction of fluid level (hydration) is mandatory. Please pay attention to it. To understand the child s problem you need to consult pediatrician and keep close watch on ability to accept feed, able to pass urine, activity, alertness, fits etc these are red flag signs if present require hospitalization immediately I hope my advice may help you. Take care