The side effects of Radiation Therapy can be classified as Acute, Subacute and Delayed.
Acute reactions occur during the course of treatment and are temporary.
They are manifested as signs of increased inter-cranal pressure or worsening of neurological deficits. The administration of corticosteroids usually decreases or alleviates symptoms. Steroids are generally administered during the course of therapy to prevent this occurrence. Subacute reactions generally develop one to three months after completion of therapy. These are temporary in nature.