Flaky skin

First off I've got a doctors appointment tomorrow afternoon so I'm definitely getting some medical advice.
Anyone had really bad flaky skin? Recently my skin has been flaking off in reasonable sized pieces around my hair line. I work with a lot of boys and they weren't so subtle pointing it out, but it is pretty obvious to anyone looking at me. My skin isn't itchy or red and I can't see anywhere else it's really happening except right at the front.
These pieces would be sometimes 3mm square or bigger, they don't hide that well and it doesn't matter how many times I pull each individual piece out of my hair strands there's plenty more not all that long after!
I haven't changed any shampoos or conditioners or any other soap or detergent around the house. Nothing else has changed in my day to day life either, no excessive stress, if anything less stress!
I do have sensitive skin, for example anything with glue will burn me but I've never had it like this. Any thoughts on what it could be or what's causing it?