Connor on Instagram: "*TRIGGER WARNING - Footage of a Myoclonic Seizure* A myoclonic seizure is a type of seizure that causes sudden, brief muscle jerks. They’re often described as feeling like a shock or jolt to the body. These jerks are involuntary, happen very quickly, and usually last less than a second. What does a myoclonic seizure look like? • Sudden jerking of the arms, legs, shoulders, or whole body • Can be one single jerk or a cluster of jerks • Often happens shortly after waking up •