<s>[INST] My son is 3.5 years old and healthy, he has just started Epilum as they suspect epilepsay. But today when changing his nappy today i noticed that it had a bit of blood in it and it had a rather revolting smell, mixture of of rotten fish and anomia. i have also noticed that his breath smells just as bad, despite washing his teeth daily. Any ideas [/INST] Hi having blood in the urine is abnormal, and he also had a foul smell needs further evaluation to rule out the cause-infection/stones. Please also get an ultrasound of abdomen to see for any kidney or bladder abnormality. Consult a child specialist who will properly guide you and treat based on the cause. Hope it answers your query and ready to help you further if you have any queries as I am a specialist in child Chat Doctor.  </s>