Had been taking lonazep. Else in body!

He had been taking lonazep 0.5 mg from last 15 years, along with D-veniz initially as prescribed by the doctor. Then later only lonazep. Recently he s getting angry on small issues, there is mood swing, even he starts crying. Also from past 15/20 days he is forgetting things, like he has eaten or not. He forgets which place he is now. Forgets directions. He even asks In which room I am there. He had stated repeating things. He will repeat the same thing which he said 1 minute before. He says he is having headache when he does not take lonazep or around 6/7 after taking it. Suddenly he forgets he has headache then he will say his body is itching. Sone time he says there is sensation in lips sometimes somewhere else in body