My nails recently developed thin white bands, irregularly located. Before this both my pointer fingers grew transverse w-shaped ridges at the same time and they are now halfway through (i.e. They moved with my nail growth). They have white bands in the same place, which developed later in old nail, closer to the tip, the area between the ridges and these bands are lighter and slightly yellow tinted. The joints closest to my pointer tips crack when I bend them (but this is a recurring issue). I am most concerned by the sudden and recent appearance of white bands overnight in all of my nails--are they make lines? There are also some faint lines in my thumbnails (near the tips). Btw don't use the phone number it is not correct.