Dear doctor, i hope you are very well. sir, i am a father of a child, my son is 6 years 1 month old,and my son waight is 17 kg,i have been noticing in the doctor for about a year and a half that my son's health is not keeping well,i have seen that gets fever in a month and half and when there is medicine,he gets cured,then after about a month and half,he feel fever and cough cold,this is happening for 1 and a half years,i have a noticed and his weight loss he is becoming very week,because of this,he does not even eat and drink at all,he is currently studying in the first grade.and by the grace of god his mind is very sharp in reading and writing. so please doctor tell me and explane why this is happening to my child and what should i do !