Which of the following is NOT one of the main categories of diseases?

The category of diseases that is not traditionally recognized as one of the main categories is psychological diseases. The primary categories typically include congenital diseases, which are disorders present at birth; inflammatory diseases, which involve the body's response to injury or infection; and metabolic diseases, which disrupt normal metabolism.

Psychological diseases, while significant in the field of health, are often classified separately within psychiatric disorders rather than being grouped into the main disease categories commonly used in pathophysiology. This distinction highlights how different health conditions are categorized based on their origins and mechanisms, with psychological conditions focusing more on mental health rather than the physiological processes that define the other categories.