Is it farther or further?
1775, "acting upon or stimulating the nerves," from Greek neuron "nerve" (see neuro-) + -otic, as in hypnotic. Sense of "affected by neurosis" is 1887. The noun meaning "a neurotic person" is from 1896. Related: Neurotically.
neurotic neu·rot·ic (nu-rŏt'ĭk, nyu-)
Of, relating to, derived from, or affected with a neurosis. n.
A person suffering from a neurosis.