Complex sentence: In certain situations, anticonvulsants may be used to try to prevent seizures; these are focal neurological problems (e.g. inability to move a limb) and/or focal changes of the brain tissue on CT or MRI scan.
Split into simpler sentences: In certain situations, anticonvulsants may be used to try to prevent seizures. These situations include focal neurological problems (e.g. inability to move a limb) and focal changes of the brain tissue on CT or MRI scan.