Hi thank you for asking Healthcare Magic. I have gone through your query and understood your concerns This is a case of gastroenteritis caused by an infection which could be bacterial or viral. This infection can be from the digestive system or from another system in the body. The child needs a thorough clinical assessment and some laboratory investigations like complete blood count, stool analysis, urinalysis, blood culture and maybe blood parasite. The greenish stool is because the intestinal transit is accelerated and bile (from liver) does not stay long enough in the intestines to be broken down. What you can do at home now is to reduce the temperature when it is high (with acetaminophen syrup or using a wet towel soaked in water) and start rehydrating the child with oral rehydration solution. Then after, you need to take the child to a pediatrician or family doctor for proper diagnosis and treatment. I hope that answers your query. If you have additional questions or follow up queries then please do not hesitate in writing to us. We will be delighted to answer more questions from you. I wish him good health