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Triggers of seizures

Some people notice a link between their lifestyle and seizures. In some cases, a very specific trigger, such as reading, causes seizures. In these rare cases, avoiding the trigger may prevent seizures. There are a number of other factors that may trigger seizures in some people. These can vary from person to person. Avoiding or reducing these triggers may help to reduce seizures in some people, but not all triggers can be avoided and seizures can still occur without the suspected triggers. Some possible triggers include:

  • Lack of sleep 
  • Missed medication 
  • Alcohol 
  • Certain drugs (prescription and recreational) 
  • Flickering lights or patterns 
  • Stress 
  • Menstruation 
  • Illness (especially with diarrhoea or vomiting) 
  • Overheating 
  • Low blood sugar 
  • Certain smells, colors or sounds

These ‘triggers’ are not the same for everyone and it may take some time to recognize their connection with seizures, especially if seizures are not frequent. Although reducing ‘triggers’ may be helpful, it is important not to assume that all seizures are due to lifestyle factors. It is important to discuss the seizures with the medical officer to make sure that the medical management is appropriate.

Many people mistakenly believe that everyone with epilepsy will have seizures triggered by flashing lights, computers or video games. In fact, only 3-5 per cent of people with epilepsy have this response, which is called photosensitivity. This reaction can also be triggered by natural light sources, such as sunlight flickering between trees.

People with epilepsy can check the work and home environments to identify and rectify any problem areas or equipment. There are also simple strategies, which can be used to reduce the risk of seizure if someone is exposed to a potential light trigger. Photosensitivity should not prevent someone carrying out most of the normal daily activities of work and leisure.

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