Not all cultural traditions have the same conception of personhood. In Confucianism, self-individuation takes place only through engagement with others in the context of one’s social roles and relationships.
The history of Western medicine chronicles a tension between ideologies of patient care—the holistic Hippocratic view and the specialization view, with a depersonalization of the patient that coincides with the rise of pathologic anatomy in the early modern era.
Like most extreme behaviors, excessive videogame playing functions as a cover or adaptive mechanism for underlying anxiety and depression. Compulsive gaming, like all pathological solutions (alcohol, drugs, gambling) makes a bad situation worse.