Dr. My son is looks normal he working also. but some time he behaive like a mead person, he break our household items most of those which is related to me. this happening from last three years with me. And before this happenjng with his yonger brother. when he is normal then there is no comparsion with knowlege, he discused the issues in a such a meaners that make other person understood perfactelly. and when he have this condition we all in my family at very screary position. and when we try to stop him he is un controlable. Kindly advise what to do.