simple partial seizure
complex partial seizures
tonic-clonic (grand mal) seizures
Myoclonic seizures are sudden, brief, single, or repetitive muscle contractions involving one body part or the entire body. Loss of consciousness does not occur unless other types of seizures coexist. These seizures can be idiopathic or associated with Creutzfeldt-Jakob disease, uremia, hepatic failure, subacute leukoencephalopathies, and some hereditary disorders. Recent evidence has linked a variant form of Creutzfeldt-Jakob disease with bovine spongiform encephalopathy (BSE), a prion disease of cattle. This variant form usually presents with ataxia and behavior changes before myoclonus and dementia.