Complex sentence: An EEG is recommended to detect other signs of epilepsy in all cases, however even when this does not prove determinative, anticonvulsants may be a first line of treatment if these symptoms are present with headache.
Split into simpler sentences: An EEG is recommended to detect other signs of epilepsy. Even when an EEG does not prove determinative, anticonvulsants may be a first line of treatment if these symptoms are present with headache.