Half & half/Terry nails

It's characterised by a white ground-glass appesance of the proximal end of the nails. Its's a common symptom in people suffering from kidney or renal diseases. The link is not fully understood, but one theory explains that kidney failure causes a buildup of nitrogen waste in the body, which leads to changes in finger and toenails. Up to 40% of people with kidney failure have half-and-half fingernails.
 Half and half or Lindsay's nails [Figure 1] are a form of apparent leukonychia with a normal proximal half and a distinctly abnormal brownish distal portion. [16] The distal portion begins proximally where the normal or whitish nail ends and terminates distally where the free end of the nail loses its attachment to the hyponychium. They have been detected in the uremic chronic renal failure patients.