Dear doctors, i hope you are very well. sir&mam, i am a father of a child my son is 6 years 1 month old, and my son's waight is 17 Kg, i have been noticing in the doctor for about a year and a half that my son's helth is not keeping well, i have seen that gets fever im a month and half and when there is medicine , he gets cured, them after about a month and half ,he feel fever and cold,this is happening for one and a half year, i have a noticed and his weight loss he is becoming very weak. please doctor tell me and explain why this is happening to my child and what should i do !