There is a third type of brain tumour, which is rarer than the other two. Pituitary tumours are abnormal growths of cells in the pituitary gland, which is located in the lower central part of the brain. They occur most commonly in people of middle age. Although many brain tumours are benign, they are still serious because they cause a build-up of pressure within the brain. Gliomas may grow to a considerable size before any symptoms are noticed.
Headaches are an early symptom in about one-third of patients.
The headaches may occur at night, waking the patient from sleep, and they may be worse first thing in the morning. Vomiting is a frequent accompanying symptom. Dizziness may also occur. The other major symptom of a glioma is fits. Personality changes may occur, producing symptoms such as irritability and lack of motivation, initiative and spontaneity.