Only a mental-health professional can diagnose a personality disorder, typically in adulthood. Insider compared the behaviors, traits, and causes of the 10 personality disorders in the DSM-5.

“People with schizotypal personality disorder are often described as odd or eccentric,” says Meghan Marcum, Psy.D., chief psychologist at AMFM Healthcare.

In 2013, personality disorder afficionados reviewing the newly released Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5), noticed a unique classification.

The dr. said after administering several tests, he diagnosed the defendant w/ schizotypal personality disorder &narcissistic personality disorder. @wjz — Avajoye Burnett (@AvajoyeWJZ) July 12, 2021 ...

The DSM-5.0 Work Group members then proposed a compromise in which six would be retained (plus one called “personality disorder-trait specified to replace “not otherwise specified”).

However, the DSM-5 Personality and Personality Disorders Work Group is recommending cutting down the current 10 categories to the following 6 personality disorder types: ...