<s>[INST] Dr. my son is 17 months old and since his birth he s been healthy. This morning twice he had loose motion am a bit worried as this is the first time. His two upper and lower grinding teeths are slowly appearing. He hasnt had anything from morning except for two bottles of milk. We live in Colorado and are Indians by origin. [/INST] Hi...when the kids start teething - to soothe the sensation of teething they keep what ever they can in the mouth and sometimes the impurities will go in and cause diarrhea. Usually this will be viral diarrhea. Once it starts it will take 5-7 days to completely get better. Unless the kids having low urine output or very dull or excessively sleepy or blood in motion or green bilious vomiting...you need not worry. There is no need to use antibiotics unless there is blood in the motion. Antibiotics might worsen if unnecessarily used causing antibiotic associated diarrhea. I suggest you use zinc supplements (Z&D Chat Doctor.  </s>