What type of seizure is typically characterized by loss of consciousness and convulsions?

Generalized seizures are characterized by the involvement of both hemispheres of the brain and typically result in a loss of consciousness. During a generalized seizure, the individual may experience convulsions, which are the rhythmic jerking movements of the body. This type of seizure includes various subtypes, such as tonic-clonic seizures, where the individual can exhibit both stiffening of the body (tonic phase) and rhythmic jerking (clonic phase).

The other types of seizures do not generally present with the same combination of symptoms. Focal seizures typically only affect a specific part of the brain and may not result in a loss of consciousness. Myoclonic seizures involve sudden jerks or spasms of muscles but do not generally lead to a complete loss of awareness. Atonic seizures, characterized by a sudden loss of muscle tone, can also cause a brief loss of consciousness, but without the convulsive nature typically associated with generalized seizures.