Hi well come to HCM.
History of fall twice and in night could be due to minor epileptic attacks.You should
consult neuro physician for this to rule out any pathology in brain causing and giving
recurrent epileptic attacks in spite of on medication.He may have to undergo MRI
brain EEG etc ivetigations.Change in drug may be the demand for uncontrol epileptic
attacks.Valparin may be the cause for change in his mental attitude as it is effective
on frontal lobe syndrome
as well. Thanks and take care.