Thanks to everyone who has replied. As ever, the knowledge and eloquence of posters is remarkable. Some very interesting and useful things to be aware of and investigate.
Evening all,
Digging into the collective wisdom and experience of NSC once again. Unfortunately, it looks like my young son has epilepsy (he's had two suspected seizures in the last couple of weeks) and is due an EEG (amongst other tests tomorrow).
Are there any sufferers on here (or parents...