I have autonomic neuropathy also, and some summers I have the issue of sweating from my head only. The first year, my scalp was drenched all over. The next year the sweating was only on the back of my head, and 2 rivers of sweat would stream down the back of my neck. Another year, only my forehead. I've been using a "cooling towel" which helps quite a bit. It's a thin, smooth cloth that you get wet, wring out, and put around your neck. It doesn't drip, although it will get your clothes damp where it touches them. If I put it on before I get really hot, it keeps my head a lot cooler. I also use the ends of it to pat my forearms or face; when you first wet it, it feels really cold. They gradually dry out and have to be re-wet periodically. They come in different sizes and shapes. I use one that's long and narrow like a scarf. I can see using it in an office and not looking too weird.

Hi!
I found this fan on the bed, bath and beyond website. It's small and goes with you. I think Smazon has it too. It called th o2 cool fan. I know someone who has it and she said it works really well.
O2 Cool Deluxe Necklace Fan, Purple 5"