Generally, all muscle tone and consciousness are lost. Myoclonic seizures cause single or multiple muscle twitches, jerks or spasms. The seizure begins with a sudden outburst and then a loss of consciousness. During this time the person might bite his tongue, lose control of body functions, and take very shallow breaths. This usually lasts for two or three minutes and is followed by limpness.
Most people are able to return to their normal activities after resting.
If the seizure begins again, call for emergency assistance. Once started, a seizure cannot be stopped abruptly. Most will end naturally. If you have never seen someone have a seizure, it can be an alarming experience. If you understand what is happening, however, you'll be knowledgeable about what to do.