What is tolerance in addiction concerns?

Direct Answer

Tolerance refers to a diminished effect from a substance with repeated exposure at the same dosage. This makes a higher dosage necessary to achieve the initial effect. Tolerance does not automatically equate to substance use disorder or addiction. It is one of several criteria observed in substance use patterns.

Developing tolerance does not mean that withdrawal symptoms will accompany cessation of use. It also does not mean that the substance is being misused. Tolerance can occur with various substances, including those prescribed by medical professionals.

Common Misunderstandings

["Misconception: Developing tolerance means someone is addicted. Correction: Tolerance is a physiological adaptation; addiction involves compulsive use despite negative consequences and impaired control. They are distinct concepts, though tolerance can be a component of addiction criteria.","Misconception: A person with tolerance will always experience withdrawal. Correction: Tolerance can develop without physical dependence. Withdrawal symptoms occur due to physical dependence, which is not always present with tolerance.","Misconception: Tolerance only happens with illicit drugs. Correction: Tolerance can develop to many substances, including prescribed medications like pain relievers or sedatives. This is a common physiological response to repeated exposure."]

In Practice

If a person consistently uses an opioid pain medication, they might find that their usual dose provides less pain relief over time. This indicates tolerance. Maintaining the same level of pain relief might require an increased dose.

For a person using alcohol, tolerance might manifest as needing more drinks to feel the same effects they once experienced with fewer. The body adapts to the presence of the substance. This change in response is a physiological process.

Tolerance can mean that the body has adapted to a substance's presence. It indicates altered sensitivity to the substance. This altered sensitivity can occur without the person experiencing impaired control over substance use or negative life consequences.

What This Does NOT Mean

["This does not mean a person is necessarily experiencing a substance use disorder. Tolerance is an observed physiological adaptation that can be present without other diagnostic criteria for addiction.","This does not mean the person is intentionally misusing a substance. Tolerance can develop as a natural response to consistent use, even when following medical instructions.","This does not include behavioral cravings or compulsive drug-seeking behaviors. While tolerance may coexist with these, it is a separate physiological process."]

Scope

This information is for reference only and does not constitute medical advice, diagnosis, or treatment recommendations.