A seizure is a sign of abnormal brain activity, which can be caused by many problems. Up to 10% of the population is likely to experience a seizure at some time in their life. A seizure may occur when the normal pattern of electrical activity of the brain is disrupted. This can cause changes in sensation, awareness, behaviour, or sometimes convulsions, muscle spasms or loss of consciousness. Seizures vary greatly and most are over in less than 5 minutes. Not all seizures are caused by epilepsy.
A seizure may be associated with:
- lack of oxygen (hypoxia).
- onset of cardiac arrest.
- medical conditions affecting the brain, e.g., low blood sugar, low blood pressure, head injury, neurological diseases, epilepsy.
- trauma to the head.
- some poisons and drugs.
- withdrawal from alcohol and other substances of dependence.
- fever in children under six years.
Seizures may affect all or part of the body. Seizure activity may take many forms.
Signs and symptoms may include:
- Sudden spasm of muscles producing rigidity. If standing the victim will fall down.
- Jerking movements of the head, arms, and legs.
- Shallow breathing or breathing may stop temporarily.
- Dribbling from the mouth; the tongue may be bitten leading to bleeding.
- Incontinence of urine and/or faeces.
- Changes in conscious state from being fully alert to confused, drowsy, or loss of consciousness.
- Changes in behaviour where the victim may make repetitive actions like fiddling with their clothes.
Generalised seizures usually involve the entire body and cause a loss or marked alteration in consciousness. Some generalized seizures result in life-threatening problems with airway or breathing, or risk of trauma from muscle spasms or loss of normal control of posture and movement. During partial seizures, usually only part of the body is affected, and the person retains consciousness but may be frightened or confused.
Management of Seizures
If the victim is unresponsive and not breathing normally, follow DRSABCD.
If the victim is unconscious and actively seizing, the rescuer should:
- follow the victim’s seizure management plan if there is one in place.
- call an ambulance.
The rescuer should:
- manage the victim as for any unconscious person.
- remove the victim from danger or remove any harmful objects which might cause secondary injury to the victim.
- note the time the seizure starts.
- protect the head.
- avoid restraining the victim during the seizure unless this is essential to avoid injury.
- lay the victim down and turn the victim on the side when practical.
- maintain an airway.
- reassure the victim who may be dazed, confused or drowsy.
- call an ambulance.
- frequently reassess the victim.
- put a child in a bath (to lower their temperature) during a convulsion as this is dangerous.
- do not force the victim’s mouth open nor attempt to insert any object into the mouth.
A seizure in water is a life-threatening situation. If the seizure occurs in water:
- Support the victim in the water with the head tilted so the face is out of the water.
- Remove the victim from the water as soon it is safe to do so.
- Call an ambulance.
- If the victim is unresponsive and not breathing normally, follow DRSABCD.