I noticed a strange looking brown streak on my right thumb yesterday. It is a uniform 2 mm wide stripe and goes from my cuticle to the edge of the nail. I did a little search on line and what I found out has really freaked me out. I guess it could be an early sign of Melanoma. I have an appointment with a dermatologist tomorrow morning and I guess I'll know soon. Anyone else ever heard of this, seen it or had it?