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?

Probably not: The dose from a single ct scan probably would not cause you to develop a brain tumors. Most brain tumor are sporadic. It pretty much impossible to predict who will develop one and why. Please see your doctor if you are worried.

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.

No.: The latency period for cancer induction is at least 5-10 years and the radiation dose from a routine head ct is neglible.

And why the Head CT: 3 years ago? The chance of a head ct causing a brain tumor is extraordinarily low for an individual probably less than 1/10, 000 studies. See a neurologist or get an excellent history and exam before any further studies.

Not likely: The amount of radiation from a ct scan is highly unlikely to induce a brain tumor. Also, "brain tumor symptoms" can be from many things other than a brain tumor...Unless you have a ct scan or MRI scan, or a brain biopsy which shows that indeed you have a tumor, then you may have many other possible conditions other than brain tumor. Consult your physicians and find out what's going on.