I, too, am finding my normally thick hair is showing up more in my brush and on the floor. I am a 46yo woman with Crohn's disease on top of being bipolar II rapid cycling. The only thing I can attribute the hair loss to at this point is the Trileptal because I began having this symptom only after I started it. I have a very strict diet to control my Crohn's disease without meds and that hasn't changed. Besides going off of Trileptal, does anyone have any countermeasures for the hair loss?