Conversation: The conversation between human and AI assistant.
[|Human|] My son is 15. Yesterday he had a spell where he felt naseus, dizzie, got blurred vision to the extent that he could barely see, a loud whistling sound through his ears. He then collapsed on the floor, not sure if he was unconcious. About ten minutes later was feeling better but then got a blood nose which took some time to stop. Felt ok the rest of the day apart from feeling a bit tired and weak for quite a few hours after. What could this be?
[|AI|]  Hi, thank you for choosing Chat Doctor. Your son might have an episode of syncope but that doesn't usually have bleeding from nose. Kindly get your sons blood pressure checked once and also get an ECG done to rule out any cardiac cause. Syncope can be usually due to stress or standing upright for long hours, but still it's better to get his general checkup done. Hope this has been helpful to you, kindly feel free to contact again for any queries. Kindly rate the answer if so. Take care.  Chat Doctor.