1. Chronic renal failure  (Trust Mark: Doctor-Reviewed)
Chronic renal failure is a slowly worsening loss of the ability of the kidneys to remove wastes, concentrate urine, and conserve electrolytes.• Reviewer: Charles Silberberg, DO, Private Practice specializing in Nephrology, Affiliated with New York Medical College, Division of Nephrology, Valhalla, NY. Review provided by VeriMed Healthcare Network.

2. Neuralgia  (Trust Mark: Doctor-Reviewed)
Neuralgia is pain that follows the path of a nerve. See also: Trigeminal neuralgia• Reviewer: Daniel B Hoch, PhD, MD, Assistant Professor of Neurology, Harvard Medical School, Department of Neurology, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.