I&#x27;d say that&#x27;s why diagnoses are typically a &quot;perfect storm&quot; of otherwise normal conditions. We can probably all say that we&#x27;ve experienced schizoid avoidance patterns. But at some point, for certain people, that condition becomes a part of a larger psychological pattern in which it&#x27;s considered an illness. Usually because it begins to have an overtly negative impact on the ability to function in society.<p>The nature of human development just means that we all inherit some level of personality &quot;defect&quot;. But psychologists don&#x27;t view them all as candidates for a diagnosis of mental illness.