You searched for: “neuropathic
neuropathic (adjective) (not comparable)
Pertaining to an organic or functional disorder of the nervous system: Mrs. Jackson knew that a neuropathic condition of her fingertips, toes, or even of the retinas could arise because she had diabetes for a long time.

The terms "neurotic" and "psychogenic" are usually preferred by many psychologists instead of neuropathic for functional disorders.