Symptoms of a brain tumor on the frontal lobe include loss of memory, loss of the senses of smell and vision, changes in behavior and emotion, and reduced mental cognition, according to Mayfield Brain & Spine. The tumor also impairs the patient's judgment and causes paralysis on one side of his body.
These symptoms come about because the frontal lobe of the brain is the area that controls cognitive function, including memory, judgment, language and the ability to communicate, and problem solving, notes Healthline. It also houses the person's control over his muscles. The left part of the frontal lobe controls the right side of the body, and the right side of the frontal lobe controls the left side of the body.
There are also more generalized symptoms, explains Mayfield Brain & Spine. They include loss of balance and clumsiness, headaches that are worse in the morning, speech problems, abnormal movements of the eye, and seizures. The patient also suffers from nausea and vomiting, drowsiness and slowed responses because of the increasing pressure inside the brain.
Brain tumors are either malignant or benign, reports Mayfield Brain & Spine. However, both types are dangerous. Even a benign brain tumor can threaten a patient's life if it grows in an area of the brain that controls vital functions such as breathing.