Dependent personality disorder (DPD) is a personality disorder that is characterised by a pervasive psychological dependence on other people. The difference between a 'dependent personality' and a 'dependent personality disorder' is somewhat subjective, which makes a diagnosis sensitive to cultural influences such as gender role expectations.

Avoidant personality disorder (sometimes abbreviated APD or AvPD) is a personality disorder characterised by a pervasive pattern of social inhibition, feelings of inadequacy, and extreme sensitivity to negative evaluation. People with avoidant personality disorder often consider themselves to be socially inept or personally unappealing, and avoid social interaction for fear of being ridiculed or humiliated.

Dependent personality disorder as related to Avoidant personality disorder