Final answer:
Impairment can result from accidents, medical conditions, aging, and genetic factors. Primary aging involves biological changes, while secondary aging includes lifestyle factors. Nervous system disorders are complex and often lack treatments that address the underlying causes.
Step-by-step explanation:
Events and changes in circumstances that might lead to an impairment include a variety of factors such as accidents or injuries, medical conditions, aging, and genetic factors. Aging can lead to a decline in the body's functional capacity, which is influenced by both biological and lifestyle factors. As an individual ages, primary aging refers to molecular and cellular changes, while secondary aging refers to aging influenced by lifestyle, such as lack of exercise or poor diet.
Nervous System Disorders
Nervous system disorders are often complex, associated with genetic mutations and environmental factors like stress and chemical exposure. These disorders can manifest in various ways and treatment usually focuses on symptom management rather than curing the underlying cause. Many people in old age suffer from chronic health conditions and cognitive impairments such as Alzheimer's disease. Stress, whether chronic or acute, can also contribute to these conditions, with lasting effects on an individual's mental and physical health.