Some symptoms you will notice for example are strange changes in behavior, changes in emotional patterns and impaired judgment. People showing these types of erratic behavior should be encouraged to see a doctor since these are not just brain cancer symptoms, they can be symptoms of other mental illness, drug abuse and/or other addictions.
Another set of symptoms involve changes in sensory perception. The person will experience weird changes or problems with their senses. The sense of smell can be altered, you might be hold a rose to your nose but smell smoke for example. Vision can become blurred or spotty or the person might start seeing double and maybe only on one side. Sense of touch, for example could be changed in such a way that even though nothing is touching his or her hand, they feel prickling or tingling. The senses of hearing and taste can likewise be affected, perceiving something that is not there.
