Gliomas are neoplasms derived from glial cell precursors. Gliomas may present with one or a combination of neurological deficits, symptoms of mass effect and seizures, usually reflecting the anatomical location of the lesion. Seizures in the context of glioma appear to confer a significant prognostic benefit. Epileptic foci are believed to develop within the cortex surrounding tumors, since the lesions themselves have no electroencephalographic (EEG) activity and are not electrically excitable. Diagnosis of a space-occupying lesion as the cause of a seizure is made usually with the aid of cross-sectional imaging. Magnetic resonance imaging (MRI), with and without gadolinium contrast, is the investigation of choice, showing a higher sensitivity and specificity than computed tomography (CT) for detecting glioma. Fractionated focal radiotherapy is a key component of adjuvant treatment, especially in high-grade lesions. Chemotherapy with temozolomide has been shown to be of seizure benefit in approximately 50% of Grade 2 gliomas.