There is no single personality disorder that makes someone completely unable to make decisions. However, some personality disorders can make decision-making significantly more difficult.
Individuals with Dependent Personality Disorder often struggle with making decisions due to a pervasive need for reassurance and approval from others. They may fear making the wrong choice and rely heavily on others to guide them.
People with Obsessive-Compulsive Personality Disorder may become paralyzed by indecision as they analyze every detail and consider all potential outcomes, often delaying or avoiding decisions altogether.
Avoidant Personality Disorder can lead to difficulty in making decisions, particularly those that involve social interaction or risk of rejection. Fear of criticism and disapproval can make it hard to choose a course of action.
It's important to note that these are just examples, and not everyone with these personality disorders experiences decision-making difficulties in the same way. Additionally, other factors like life experiences, support systems, and coping mechanisms can influence how people handle decision-making.