What is Dependent Personality Disorder? Symptoms and Causes Explained Dependent Personality Disorder (DPD) is a psychological condition characterized by an excessive need to be taken care of, leading to submissive and clingy behaviors. People with DPD may have difficulty making decisions, expressing disagreement, and taking initiative. This disorder can cause significant distress and impair an individual’s ability to function in social, work, and family settings. In this article, we will explore the symptoms, causes, and treatment options for Dependent Personality Disorder. Symptoms of Dependent Personality Disorder (DPD) The symptoms of DPD can range from mild to severe and often manifest in interpersonal relationships, particularly with family members, friends, and romantic partners.