Inflexible traits are enduring patterns of thinking, feeling, and behaving that are rigid and maladaptive, leading to significant distress or impairment in social, occupational, or other important areas of functioning. These traits are a hallmark of personality disorders, particularly in Cluster A, which includes paranoid, schizoid, and schizotypal personality disorders. Individuals with inflexible traits struggle to adapt their behaviors or perceptions in response to varying situations or social cues, often resulting in interpersonal difficulties and a skewed view of reality.