Acquired pincer nail deformity associated with renal failure.

Pincer nail deformity represents a loss in the normal convex shape of the nail and has been reported in association with various diseases and medications. The authors report a man with end-stage renal disease due to bladder carcinoma who developed pincer nail deformity while on hemodialysis. Previous case reports cite diabetes as a suspected cause of pincer nail development in patients with renal failure. However, the patient described in this case was not diabetic and his nail dystrophy is likely related to arteriovenous fistula placement.