Age of onset

Age of onset

Age of onset (pronunciation: /ˈeɪdʒ ɒv ˈɒnˌsɛt/) refers to the age at which an individual first exhibits signs or symptoms of a disease or condition. The term is widely used in the field of medicine and psychology to describe the start of disease manifestation.

Etymology

The term "age of onset" is derived from the English words "age", meaning the length of time that a person has lived, and "onset", meaning the beginning or start of something.

Related Terms

• Early onset: This term is used when the symptoms of a disease appear at a younger age than typically expected. It is often used in the context of diseases like Alzheimer's, where early onset refers to symptoms appearing before the age of 65.

• Late onset: This term is used when the symptoms of a disease appear at an older age. It is often used in the context of diseases like diabetes, where late onset refers to symptoms appearing after the age of 45.

• Incubation period: This is the time elapsed between exposure to a pathogenic organism or chemical and when symptoms and signs are first apparent.

• Prodromal period: This is an early stage in a disease where a patient experiences symptoms, but they are not yet specific enough to determine exactly what the disease is.

• Chronic disease: This is a type of disease that persists for a long time, typically more than three months. The age of onset for chronic diseases can vary widely.

• Acute disease: This is a type of disease that has a rapid onset and a short course. The age of onset for acute diseases can also vary widely.

External links

• Medical encyclopedia article on Age of onset
• Wikipedia's article - Age of onset

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