Ever since starting treatment for lyme disease with longterm and high dose antibiotics i've seen my eyebrows getting ever thinner. My eyebrows have always been very full and well shaped, now they're really thinned out and losing shape! The outer quadrant already has been lost and now it's the center that's getting really thin. I'm also losing hair around my neckline, how strange is that! I know that thyroid disease can cause eyebrows to fall out, but i'm thinking it might be nutrient related. My thyroid labs have always being pretty normal. My hair is not only falling out but also turning grey rapidly and the structure of the hair is becoming very different, very coarse beardlike. The fact that i suffer from inflammatory bowel disease might also contribute to nutritional deficiency. Does anyone know which nutrients might be playing a role?