I have very long, thick hair (waist-length) which I've had to wear pulled back in a tight bun for work purposes for the past several years. It never seemed to be a problem before. However, in March 2009, I noticed a small spot at my temples where the hair was sparse. And in the last 3 months, my hairline over my forehead has receded, and the hair on the left side of the top of my head is very thin. I've stopped wearing my hair up in a bun, but everything I've read says that traction alopecia may be irreversible after a certain point. How do I know if I've let it go on too long? Is it pretty much just a "wait and see" approach from here on out?