6. Muscle weakness
There’s an area in the brain called precentral gyrus, which is in charge of controlling the movement of the whole body. It is found in the frontal lobe, and any tumor affecting this area would also cause muscle weakness in a given part of the body and even paralysis of this area. In the precentral gyrus, there is a depiction of the whole body, and each lobe is in charge of controlling the movements of the opposite side of the body. Thus, a brain tumor located on the left side of the brain would affect muscles located in the right portion of the body.