<s>[INST] When I was 8-10 years old I had a siren noise coming from my head that other people could hear from a distance. The doctors that studied me thought my parents and I were crazy and couldn t find a reason for the noise and it never seemed to happen when a doctor was nearby. I am just wondering if since then there has been any other cases of this condition and what causes it?Thanks [/INST] Hello, I have noted your symptoms. There is a rare condition called arterio-venous fistula when the sound of blood flow can be heard coming out of brain, however, it is very unlikely that you had AV fistula, as it can not get treated without surgery. It was most probably a psychological illness. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr. Sudhir Kumar </s>