Final answer:
Addiction is a chronic disease characterized by the prolonged, compulsive use of substances such as psychoactive drugs, and it's generally considered to be a lifelong condition.
Step-by-step explanation:
Addiction is categorized as a chronic disease. Unlike acute diseases, which are short-lived, chronic diseases are long-term and can last for months or years. Drug addiction is a compelling example of a chronic condition where individuals compulsively use substances such as psychoactive drugs despite the negative consequences that such use may entail. The nature of addiction involves prolonged engagement with the substance, and even though treatments exist that may help manage addiction, it is generally considered a lifelong disease. It can be compared to other long-term conditions, such as type 1 diabetes or certain cardiovascular diseases, in that it may be managed but not completely cured.