Answer:Schizoid personality disorder
Step-by-step explanation:
Schizoid personality disorder affects someone in a way that they start to lose interest in any social interaction or activities or relationships they prefer a solitary or secretive lifestyle.
They usually never show their emotions cause they will always give you a cold shoulder.
Schizoid personality disorder makes a person shy away from any social gatherings. They become emotionless.
People may see them as loner and dismissive with no interest in making friends. Their emotionless nature make them look like they don't care about people.