My husband wakes in the middle of the night and doesn’t know who I am, often calling me his brother’s name. He shouts at me to get up & can become aggressive, threatening to hit me whilst he tries to get dressed. It takes time to calm him, often taking him out for a cigarette works. He’s on Memantine & Mirtazapine, which usual settles him when he goes to bed but recently he has woken more in an agitated state. Not sure these drugs help? Or whether this is part of his condition getting worse. It’s exhausting. Anyone else experience this?