Aprosexia, an abnormal inability to pay attention, characterized by near-complete indifference to everything. Opposite is hyperprosexia, meaning to concentrate on one thing to the exclusion of everything else; and, paraprosexia, meaning the inability to pay attention to anyone thing (a state of constant distraction).
When I find myself under duress, I believe that the word aprosexia is exactly what I am. I can’t focus, I am easily distracted and it’s not because I can’t focus, it is more because I really just don’t care about what you are trying to get me to care about. I just do not care. Nothing you can do or say will bring me back from where ever I am.
Ironically, I am also very much almost completely the opposite. I have been accused of being incredibly hyperprosexia when I am really into something. I can be so deeply focused on just ONE thing that I get angry when I am in the middle of it and just want to be left alone. There are special things that have me intensely occupied and when someone attempts to distract me from completing that special project I can quietly lose my mind. This happens when I am working on an art project, reading a really good book, or just trying to get an important task done.
However, if there was ever a word that described me almost completely, it would likely be paraprosexia. I am very good at being easily distracted. I am great at multi-tasking because I operate better when there are a million things going on at the same time. I tell circular stories. I can start a joke, get distracted with my thoughts, my words, my ideas and my actions, and eventually get to the punchline. My mind is often working overtime like these dancers in Nepal. Crazy colors, sounds, and movement. It’s my favorite place to be.
savage; boheme; Herry; Jonathan; Divine; hubner; Judy; quest; marie
rfljenksy - Practicing Simplicity 
I used to be a great multitasker, but in the past few years, I’ve lost that capacity. I don’t know if it is nature’s gift or nature’s curse.
Probably a little bit of both! For me it’s being a little persnickety, I have to really want to do something or multiple things to be a good multiple tasker now!