Is it is true that there is no help for a person with the personality disorder?
The short answer is no it is not true that a person with personality disorder cannot be help and that there is no change for them. The catch is you cannot be the one who changes them. A person with a personality disorder cannot change unless they want to change themselves. So if you're in a relationship with a person with a personality disorder they will not change unless they want to change. A person with a personality disorder may not want to change because they did not develop a personality disorder over night and most likely it helped them in someway for them to be that way in the world. The only person you can change is yourself. Please don't accept this behavior because they "can't help it", and get this toxic relationship out of your life.