Literally meaning: “split type ”
Origin: Anc Greek
+(-οειδής)/-oides(=-oid, prefix meaning “like”, “type”, “form”)
in 1908 by a Swiss psychiatrist Eugen Bleuler in order to designate people who illustrated seclusive, withdrawn behaviors which did not coincide with social norms aned the external world.
Schizoid personality disorder (SPD) is a personality disorder characterized by a lack of interes (apathy) in social relationships.