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  1. Tonic-clonic (grand mal) seizure - Symptoms and causes

    Feb 1, 2025 · Tonic-clonic seizures have two stages: Tonic phase. Often, someone in the tonic phase will make a sound, such as a groan or yell. The muscles suddenly get stiff and cause …

  2. Tonic-Clonic (Grand Mal) Seizure - Cleveland Clinic

    The term “tonic-clonic” refers to the two phases of these seizures, with the initial tonic phase involving widespread tensing up of muscles in your arms and legs and then the clonic phase …

  3. Tonic-Clonic (Grand Mal) Seizures - Johns Hopkins Medicine

    Tonic-clonic seizures, formerly known as grand mal seizures, comprise two stages: a tonic phase and a clonic phase. These intense seizures can be frightening to experience or observe, as …

  4. Tonic-Clonic Seizures - Epilepsy Foundation

    When they start in both sides of the brain, they are called generalized onset motor seizures or a generalized tonic-clonic seizure. Both terms mean the same thing. When they start in one side …

  5. Tonic-clonic seizures - Epilepsy Action

    There are 2 phases in a tonic-clonic seizure: the ‘tonic’ phase, followed by the ‘clonic’ phase. Seizure diaries are a good tool to help you track and manage your epilepsy. Download our …

  6. Phases of Tonic-Clonic Seizures and How to Manage Them

    May 8, 2025 · A tonic-clonic seizure, formerly called a grand mal seizure, is the "classic" type of seizure most people are familiar with. It involves two phases: In the tonic phase, the muscles …

  7. Tonic-Clonic Seizures - The Defeating Epilepsy Foundation

    Feb 24, 2021 · Unlike individual tonic or clonic seizures, tonic-clonic seizures occur in 2 phases. First, the individual loses consciousness during the tonic phase. In this stage, their muscles …

  8. Tonic Seizures: Symptoms, Causes, Severity - Healthline

    May 24, 2023 · Tonic-clonic seizures start with the tonic phase, where your muscles suddenly stiffen and twitch. It then enters the clonic stage, where you might lose consciousness or …

  9. Tonic-Clonic Seizures - Epilepsy Ontario

    During a generalized tonic-clonic (formerly grand mal) seizure, electric discharges instantaneously involve the entire brain. The person loses consciousness right from the beginning of the …

  10. Tonic-Clonic Seizures Explained - MyEpilepsyTeam

    Jul 20, 2022 · Generalized tonic-clonic seizures were previously called grand mal seizures. Here’s what to know about these seizures, including symptoms, causes, diagnosis, and treatment …

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