What condition occurs before the age of 22?

The condition that occurs before the age of 22 is classified as a developmental disability. Developmental disabilities are a group of conditions that manifest during the developmental period, which typically includes the years from birth to 22 years of age. These disabilities might affect physical, learning, language, or behavior areas, and they may result in lifelong challenges.

This distinction is important because developmental disabilities can influence an individual's ability to function in daily life, requiring specialized support and services. The age criteria reflect guidelines used in various statutes and programs, emphasizing the focus on early intervention during key developmental milestones in a person's life.

In contrast, mental disabilities can encompass a broad range of issues and may not have the same strict age onset criteria. Chronic illnesses can develop at any point in life and may not be specifically tied to the developmental period. Behavioral disorders can manifest later and may not be classified within the same framework as developmental disabilities, as they can arise due to a combination of genetic, environmental, and psychological factors beyond the early years of life.