Final answer:
A sudden attack observed in epilepsy is known as a seizure. Seizures in epilepsy occur due to abnormal electrical activity in the brain and can cause a period of lost consciousness and muscle contractions.
Step-by-step explanation:
A sudden attack observed in epilepsy is known as a seizure. Epilepsy is a disease characterized by recurrent seizures caused by abnormal electrical activity in the brain. Seizures in epilepsy can result in a period of lost consciousness and violent muscle contractions. They may be triggered by factors such as infections, brain injuries, tumors, or a combination of genetic and environmental factors.