<s>[INST] My son 5 years old - started to vomit during sleep from 15.08.2011. After that he had 5 episodes of vomit during sleep. The problem is, after vomiting he was not responding for around 5 minutes, with his eye deviated to one side, head turning towards one side, after this episode he was very tired and sleepy. Last three vomiting contain blood also. MRI, EEG reports are normal. More details about my child: Birth weight - 2.25 kg, now 13.48 kg. All milestones are delayed Had milk allergy and now we started to give him milk from last year. [/INST] Hi, If I were your treating Doctor for this case of severe pain under the left rib cage, I would come up with three possibilities, these include: The first possibility is of tongue or cheek bite during vomiting. Diagnosis can be confirmed by examination of mouth. To help control the vomiting, you should always keep head of child, give him water to since out. Also take some risperidone or ondansetron syrup ; if the symptoms are severe, then you may need Chat Doctor.  The second possibility is of febrile seizures. In this case he should be observed by neurologist to rule out seizure cause. The last possibility is of erosive gastritis. For this purpose you need to get an occult blood stool test, stool culture for flora and sensitivity to antibiotics. Hope this answers your question. If you have additional questions or follow-up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing your son good health. </s>