Factor associated with the occurrence of epilepsy in autism: a systematic review.

The team hunted for factors that raise epilepsy risk in autistic people. They read every paper they could find and kept 53 studies.

Most papers looked at kids, some at adults. The review asked one question: what traits make epilepsy more likely?

Only one factor showed up again and again: intellectual disability. Kids or adults with both autism and ID faced higher odds of seizures.

Other rumored links—like sex, age, or speech delay—were too weak to trust.

Gillberg et al. (2010) followed autistic adults for years. They saw the same pattern: deaths happened earlier, and epilepsy was a main cause. The new review backs their warning—screen for seizures when ID is present.

Waddington et al. (2020) found that seizures also predicted bad sleep. Put together, the papers say epilepsy hurts both life span and daily life, so catching it early matters.

Tonnsen et al. (2016) counted how many kids with ID also have autism—about one in five. That big overlap explains why ID keeps popping up as the clearest epilepsy red flag.

When you see an autistic client with ID, add epilepsy screening to your intake. Ask about staring spells, morning headaches, or sudden falls. Share the red-flag list with parents and teachers. Quick referral can cut harm and may save lives.