**Core Concept**
Personality disorders are a group of mental health conditions characterized by enduring and inflexible patterns of behavior, cognition, and inner experience that deviate markedly from the expectations of the individual's culture. Treatment of personality disorders often involves a combination of pharmacological and psychotherapeutic interventions.

**Why the Correct Answer is Right**
The most effective treatment for personality disorders is psychotherapy, particularly dialectical behavior therapy (DBT) and cognitive-behavioral therapy (CBT). DBT focuses on developing skills to manage emotions, tolerate distress, and improve relationships, while CBT aims to identify and change negative thought patterns and behaviors. Pharmacological interventions, such as mood stabilizers and antipsychotics, may be used to manage comorbid symptoms like depression and anxiety. However, medication alone is not sufficient to treat personality disorders.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because while medication can be used to manage comorbid symptoms, it is not the primary treatment for personality disorders.
**Option B:** This option is incorrect because while hospitalization may be necessary in cases of severe personality disorder-related behavior, it is not a standalone treatment.
**Option C:** This option is incorrect because while family therapy can be beneficial in supporting individuals with personality disorders, it is not the most effective treatment.

**Clinical Pearl / High-Yield Fact**
It is essential to note that personality disorders are often comorbid with other mental health conditions, such as depression and anxiety disorders, and that treatment should address these comorbidities in addition to the personality disorder itself.

**Correct Answer: D. Psychotherapy, particularly DBT and CBT, is the most effective treatment for personality disorders.**