How would a character know...?

If he/she has a brain tumor? What are its signs/symptoms? How is it diagnosed?How would a character know...?
Many MANY different symptoms can take place. Or none can occur at adjectives! The usual symptom is headache, which is not very willing to help as a symptom, seeing as we all go and get them!
Though the symptoms always depend on the location of the tumour. Those that grow from the pituatary gland habitually compress the optic nerve resulting contained by vision loss or blurred phantasm while many other do not own many symptoms. If you are concerned nearly this though then turn and speak to your primary care physician, its what they are in attendance for and they will perform a few neurological test.
An MRI or CT scan is usually used to diagnose a tumour within the brain though most of the time this finding is an unwanted one. MRIs and CTs are perform on many patients and an unwanted discovery is that of a tumour.
You'd typically go and get a CT scan or MRI of the brain. Symptoms often include seizure. The radiologist or neurosurgeon diagnoses it from the mass showing up on the CT/MRI.