Which disorder involves extreme social awkwardness and lower functioning?

Schizotypal personality disorder is characterized by a pervasive pattern of social and interpersonal deficits that often lead to extreme social awkwardness and discomfort in close relationships. Individuals with this disorder may exhibit peculiar behaviors, thoughts, and speech, which contribute to their difficulties in forming and maintaining social connections. These characteristics can result in lower functioning in various aspects of life, such as work and personal relationships, due to a lack of social support and understanding.

This disorder is distinct in its symptoms, which can include social anxiety, unconventional beliefs, and a sense of detachment from reality, setting it apart from other conditions listed. Schizotypal personality disorder situates itself within the realm of personality disorders, which inherently involve patterns of behavior and inner experiences that differ significantly from societal expectations, further amplifying the individual's social isolation and lower functioning. This combination of factors makes it the most fitting answer to the question regarding extreme social awkwardness and lower functioning.