Collette Delahunt,  whose son Seán has severe epilepsy and is  now one of 50   people who are undergoing intensive evaluation at the FutureNeuro research centre in Dublin.  Photograph: Julien Behal Photography

Just before his fourth birthday Seán Delahunt had his first seizure. Collette Delahunt from Dublin recalls the “dreadful shock for the whole family” w(...)