Do you thing the radiation I got from head CT scan 3 years ago gave me a brain tumor-im asking because im having a brain tumor symptoms now im worry?
No. The latency period for cancer induction is at least 5-10 years and the radiation dose from a routine head ct is neglible.
very unlikely. Radiation can indeed cause brain tumors, but the risk is related to the dose of radiation and is most common with radiation therapy, that is lots of dose to treat an existing brain tumor. It is highly improbable that a diagnostic ct scan you had 3 years ago has caused a brain tumor. See your doctor for an explanation of your symptoms, which you have not described here.