Hi there, I understand your concern, and I agree that if she has repeated episodes of passing out/fainting, that she should have it investigated. The most common things that we have to rule out are heart and rhythm problems, which is why the doctor checked that first when he examined her. I usually do not proceed much further myself with a single episode of fainting, because it is not uncommon, especially if triggered by things like dehydration or illness. However, if there are recurrent episodes, then we need to be sure that there are no other problems. This is especially so if they are what we call spontaneous episodes, which means that there was no trigger - she was completely well, eating and drinking enough, did not have any awkward positioning or movements, and just suddenly passes out. Other than heart problems, the other category that we need to investigate are seizure disorders, which can present as just fainting spells. Ask her if she remembers what happened before she faints, any sensations, lights, palpitations. Usually, if she is otherwise well, an appointment with a cardiologist first will be adequate if she faints again. However, in your daughter s case, she seems to be ill with the stomachache and backache, so I would recommend the emergency room if she faints again this week. I think that if she faints again so soon, we need to look at what is triggering her, for example whether she has another infection besides the ear piercing. A urine infection can present in this way, is she prone to urine infections or constipation? A regular viral fever can also look like this, although a virus is less likely if she doesn t have a fever. Has she had her menstruation yet, could that be an issue? Make sure she drinks enough water, it keeps her volume up so that even if she is unwell, there is a good buffer before she gets to the point where she faints. Hope this helps, please let me know if you have further questions. Regards, Dr. Teh