Neuroses occupy a foundational position across the depth-psychology corpus, functioning simultaneously as clinical phenomenon, metapsychological category, and index of psychic conflict. Freud establishes the conceptual architecture: neuroses arise from the collision of libidinal demands with repression, are distinguishable into transference neuroses (hysteria, obsessional neurosis) rooted in fixation and regression, and actual neuroses reflecting direct somatic consequences of sexual disturbance. The obsessional neurosis and hysteria serve as the twin pillars upon which psychoanalytic theory was constructed. Jung accepts the structural vocabulary — dissociation, conflict, complex, regression, abaissement du niveau mental — while rejecting any uniform causal theory, insisting that every neurosis is individual and that the psychosocial dimension exceeds the clinical. He further argues that neuroses, unjustly counted mild, are in their psychic and social consequences often graver than psychoses. Horney reframes the neurotic condition as organized around idealized self-images, pride systems, and alienation from the real self, shifting emphasis from libido-economics to interpersonal and intrapsychic structure. Frankl introduces noögenic neuroses originating in existential frustration rather than psychogenic conflict, broadening the etiological field into the dimension of meaning. Across these voices, neuroses remain irreducibly plural: the corpus offers not resolution but productive tension between somatic, psychological, existential, and social explanatory registers.