In psychoanalysis, egosyntonic behaviors, values, and feelings are in harmony with or acceptable to the needs and goals of the ego, or consistent with one's ideal self-image.
Many personality disorders are egosyntonic, which makes their treatment difficult as the patients may not perceive anything wrong and view their perceptions and behavior as reasonable and appropriate.
In contrast, obsessive–compulsive personality disorder is egosyntonic, as the patient generally perceives their obsession with orderliness, perfectionism, and control, as reasonable and even desirable.
"[8] Anna Freud stated that psychological "defences" which were "ego-syntonic" were harder to expose than ego-dystonic impulses, because the former are 'familiar' and taken for granted.
[13] Otto Fenichel distinguished between morbid impulses, which he saw as ego-syntonic, and compulsive symptoms which struck their possessors as ego-alien.