IMO it's a combination of the meds, RSD, fatigue. When we don't sleep well it will mess up everything in our life. My concenstration is terrible. When I worked (I was a customer service rep. for a manufacturing plant) I was use to handleing several tasks at a time. I would talk to one customer on the phone while I was on hold I would talk to one on the computer. I had a wireless headset and I could walk all over the building when I was on the phone. I loved to multi task. I CAN NOT HANDLE THAT TODAY!! I loss my train of thought and concentration daily. Sometime I get aggrivated but it does no good to get angry. These are the side effects of RSD like accepting we have it we must accept the side effects. It's like living in a brain fog.
I hope I helped in some way.
Take care,
Sherrie