Anti-social as referred to in this thread has nothing to do with enjoying time alone or with others. This thread is about comparing two personality disorders whose symptoms sometimes overlap.

Antisocial personality disorder
Sociopathic personality; Sociopathy; Personality disorder - antisocial

Antisocial personality disorder is a mental health condition in which a person has a long-term pattern of manipulating, exploiting, or violating the rights of others. This behavior is often criminal.

Causes, incidence, and risk factors

The causes of antisocial personality disorder are unknown. Genetic factors and child abuse are believed to contribute to the development of this condition. People with an antisocial or alcoholic parent are at increased risk. Far more men than women are affected. The condition is common in people who are in prison.

Fire-setting and cruelty to animals during childhood are linked to the development of antisocial personality.

Some people believe that psychopathic personality (psychopathy) is the same disorder. Others believe that psychopathic personality is a similar but more severe disorder.

Symptoms

A person with antisocial personality disorder may:

Be able to act witty and charming

Be good at flattery and manipulating other people's emotions

Break the law repeatedly

Disregard the safety of self and others

Have problems with substance abuse

Lie, steal, and fight often

Not show guilt or remorse

Often be angry or arrogant
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Borderline personality disorder
Personality disorder - borderline

Borderline personality disorder is a condition in which people have long-term patterns of unstable or turbulent emotions, such as feelings about themselves and others.

These inner experiences often cause them to take impulsive actions and have chaotic relationships.

Causes, incidence, and risk factors

The causes of borderline personality disorder (BPD) are unknown. Genetic, family, and social factors are thought to play roles.

Risk factors for BPD include:

Abandonment in childhood or adolescence

Disrupted family life

Poor communication in the family

Sexual abuse

This personality disorder tends to occur more often in women and among hospitalized psychiatric patients.

Symptoms

People with BPD are often uncertain about their identity. As a result, their interests and values may change rapidly.

People with BPD also tend to see things in terms of extremes, such as either all good or all bad. Their views of other people may change quickly. A person who is looked up to one day may be looked down on the next day. These suddenly shifting feelings often lead to intense and unstable relationships.

Other symptoms of BPD include:

Fear of being abandoned

Feelings of emptiness and boredom

Frequent displays of inappropriate anger

Impulsiveness with money, substance abuse, sexual relationships, binge eating, or shoplifting

Intolerance of being alone

Repeated crises and acts of self-injury, such as wrist cutting or overdosing