Tell us about addiction and substance abuse. What is common between them and what are the differences? What are their symptoms?

Addiction and substance abuse are diseases that arise as a result of substance abuse, causing a short-term sense of a pleasant mental state. They are characterized by poisoning of the nervous system and pathological addiction to drugs and toxic substances. There is only a legal difference between these diseases: substances that cause substance abuse are not legally included in the list of drugs.
These diseases develop during the regular use of drugs and drugs. Once in the internal environment of the body, these substances have a strong effect primarily on the brain. Over time, three basic signs of drug addiction and substance abuse appear, grow and become fixed in a person: mental dependence; physical dependence, the expression of which is withdrawal symptoms; change in drug sensitivity (tolerance).

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