Expatriate health insurance customers might want to talk to their doctor about the risks associated with epilepsy.
According to recent research published in the Journal of Neurology, Neurosurgery and Psychiatry, people admitted to hospital with an epileptic seizure are almost 20 times more likely to develop a brain tumour in the future.
People aged between 15 and 44, who were being admitted with a seizure for the first time, were at the greatest risk.
Delphine van der Pauw, research and information executive at Epilepsy Research UK, explained that the epileptic seizures could signal the presence of a tumour before it is possible to diagnose.
However, she added: "The incidence of brain tumours in people with epilepsy is relatively low. However these findings are concerning.
"They suggest that epilepsy can be caused by developing tumours that are difficult to detect using diagnostic imaging, and which may only manifest themselves years later when they are more difficult to treat."