A patient showing an excessive need to be cared for, resulting in submissiveness and fear of separation, is likely to have which personality disorder?

The description provided in the question points specifically to characteristics of Dependent Personality Disorder. Individuals with this disorder exhibit a pervasive and excessive need to be taken care of, which leads to submissive behavior and a strong fear of separation from those they rely on. This pattern indicates an inability to function independently, with a tendency to rely heavily on others for emotional and physical support.

In Dependent Personality Disorder, affected individuals often feel helpless when alone and may go to great lengths to avoid conflicts or separation, which aligns well with the symptoms described. The compulsive search for reassurance and fear of abandonment further illustrates this condition.

The other options describe different personality disorders with distinct features. Avoidant Personality Disorder, for example, involves extreme shyness and sensitivity to negative evaluation, but does not inherently include the submissiveness or overwhelming need for care found in Dependent Personality Disorder. Histrionic Personality Disorder is characterized by excessive emotionality and attention-seeking behavior, rather than dependency. Borderline Personality Disorder focuses on instability in interpersonal relationships, self-image, and emotions, which is different from the primary concern of needing care and support.

Thus, the traits described most accurately align with Dependent Personality Disorder, making it the correct choice.