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.
1 Sensory neurons conduct action potentials to the spinal cord. 2  Sensory neurons synapse with excitatory interneurons that synapse with motor neurons. 3  Excitation of the motor neurons results in contraction of the flexor muscles and withdrawal of the limb from the painful stimulus. sensory neurons conduct action potential to the spinal cord. 2  Sensory neurons synapse directly with motor neurons. 3  Motor neurons conduct action potentials to the muscle,causing it to contract and resist being stretched.