what is neurosis
Neurosis is a class of functional mental disorders involving distress but neither delusions nor hallucinations. Neurosis may also be called psychoneurosis or neurotic disorder.ccording to the American Heritage Medical Dictionary, neurosis is no longer used in psychiatric diagnosis.. The term is derived from the Greek word Î½Îµá¿¦ÏÎ¿Î½ (neuron, nerve) and the suffix -ÏÏÎ¹Ï -osis (diseased or abnormal condition).