By Steve Bressert, Ph.D. Narcissistic Personality Disorder is a disorder that is characterized by a long-standing pattern of grandiosity (either in fantasy or actual behavior), an overwhelming need for admiration, and usually a complete lack of empathy toward others.
Idiopathic sensory-motor polyneuropathy is an illness where sensory and motor nerves of the peripheral nervous system are affected and no obvious underlying etiology is found. In many respects, the symptoms are very similar to diabetic polyneuropathy.
Robert W. Shields, Jr. Definition and Etiology. Peripheral neuropathy, in the broadest sense, refers to a range of clinical syndromes affecting a variety of peripheral nerve cells and fibers, including motor, sensory, and autonomic fibers (Box 1). Most peripheral neuropathies affect all fiber types to some extent.