The aetiological causes of epilepsy are discussed. The disease is classified, in respect of symptomology, as (a) general convulsive epilepsy (b) petit-mal epilepsy, (c) grandma' epilepsy, (d) partial epilepsy, with impairment of consciousness, (e) partial epilepsy without impairment of consciousness (f) infantile spasm and (g) and (h) other specified and unspecified epilepsies. Diagnosis and differential diagnosis, treatment and prognosis are discussed.