Final answer:
Cluster C is the personality disorder cluster defined by traits such as anxiousness, fearfulness, insecurity, and feelings of inadequacy, distinguished from Clusters A and B.
Step-by-step explanation:
The personality disorder cluster characterized by anxious or fearful traits, insecurity, and inadequacy is Cluster C.
In contrast to the information regarding Cluster 1 being friendly, Cluster 2 being creative, and Cluster 3 which indicates regional differences suggesting stress and irritability, the DSM defines personality disorders into three major clusters. Cluster A includes personality disorders that are odd or eccentric; Cluster B involves dramatic, emotional, or erratic disorders; and Cluster C is associated with anxious and fearful behavior.
This includes disorders like avoidant, dependent, and obsessive-compulsive personality disorders. These disorders are often rooted in a sense of inadequacy and are marked by chronic feelings of nervousness and tension.
Research has found that certain personality traits, such as anxiety, neuroticism, and moodiness, could predispose individuals to various health issues, illustrating the importance of understanding how personality can interact with physical and mental health.