Tonic clonic seizures are a type of seizures that affect both adults and children. The seizures cause sudden loss of consciousness and stiffening of the muscles.Seizures in adults can last from several seconds to a few minutes. They are caused by an electrical disturbance in the brain. People experiencing these seizures may also exhibit abnormal feelings, such as confusion, sweating, or a bluish tinge of the skin.These seizures are characterized by jerking movements, which usually affect the arms, legs, face, or torso. After a few minutes, these movements slow down and the person recovers. Seizure Alarms Children who experience tonic clonic seizures may become very agitated or confused. Depending on the type of seizure, they may bite their tongue or cheek, chew their limbs, or lose control of their bladder or bowels.In the postictal period, the person experiencing a seizure may appear to be sleeping. It's a good idea to call emergency services if the child appears to be unconscious.If the child has been experiencing seizures, a doctor will perform an EEG to document the electrical activity in the brain. The results of the EEG will help your doctor decide on a treatment plan.A doctor may also perform blood tests to look for certain health conditions. Hypoglycemia is a common cause of these seizures. When your child is experiencing a tonic clonic seizure, a ketogenic diet may be recommended to reduce the frequency of the seizures. Your healthcare provider may also give your child antiepileptic medicine to prevent further seizures.