Steroids
Steroids are given to reduce and control swelling of the brain, particularly before and after surgery. They do not kill tumour cells, but used alone or combined with other forms of treatment, they can bring about remarkable improvement in a patient’s condition simply because of rapid control of cerebral 
Edema (swelling).
When used for only a few days, steroids generally cause minimal side effects, including flushing of the face, mild fluid retention, swelling of the hands, feet, or face, and an increase in appetite. Used over a long period of time, however, steroids may produce physical and mental reactions such as a change in the patient’s body, including swelling of the face, arms, and legs, possible mood swings, acne, and softening of the bones. Other effects include decreased strength in the patient’s legs, more fragile skin, increased potential for sugar diabetes, and water and fat weight gain. These side effects usually disappear when the drug is carefully discontinued.
It is very important that a doctor carefully supervises discontinuation of steroids. Steroids are usually discontinued gradually, even if they are causing unpleasant side effects, because abrupt discontinuation of these drugs can cause severe problems.
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