倫敦大奧蒙德街醫院(Great Ormond Street Hospital)的兒童神經學家海倫-克羅斯(Helen Cross)教授說，60-70%的癲癇患者要麼對標準藥物治療有反應，要麼可能會逐漸消失。
A family who lost their four-year-old son to epilepsy is raising money in a bid to help researchers find better treatments.
Jude Cunnane died in October last year after being diagnosed with the condition at the age of one.
Experts say more research is needed to look at how to improve treatments.
Jude's parents Andrew and Laura Cunnane have organised a fundraising ball at Compton Acres in their hometown of Poole, Dorset, on 2 July.
A guitar once owned by Ed Sheeran will be among the items up for auction at the event.
Mr Cunnane said at his worst Jude used to have 50 or 60 seizures per night.
"So in the daytime he could barely walk or talk. Even simple things like eating were impossible for him," Mr Cunnane added.
Professor Helen Cross, a paediatric neurologist at Great Ormond Street Hospital in London, said between 60-70% of people suffering with epilepsy either respond to standard medication or may grow out of it.
The Cunnanes are raising money towards ongoing research into treatments. They are also supporting the charities Young Epilepsy and Julia's House Hospice.
Mrs Cunnanes said: "We really wanted to make sure that something positive came out of Jude's passing and to raise money for two incredible charities who really have been absolutely amazing for Jude, both during his life and afterwards."