I was on 100mg of Seroquel from sophomore year in high school to about last summer. Seroquel was one of the first psychological drugs I was prescribed and at the time I thought it was the miracle drug. It knocked me out every night, sweet sedation.
Now, as a sophomore in college I think back and wish I was never on seroquel, at least not as much of it. I can not remember anything from high school unless I look at pictures or someone tells me a story. I can't believe how much of an effect it had on my brain. Sometimes even now, just a few months off seroquel, I still feel "brain dead". I write lists and lists, my life is so organized with calendars, planners, and lists, but I still will forget doctors appointments and that has been really frustrating.
I understand your frustration of going into a room and forgetting why you went there. I have had similar experiences. I remember running up the stairs at my house and walking into my room or the bathroom automatically and then wondering why I came up there in such a hurry.
Bipolar (just diagnosed), severe depression, social anxiety, panic attacks, self harm (cutting).