Harmful pattern of use of nicotine, continuous

**Definition:** A pattern of continuous (daily or almost daily) nicotine use that has caused damage to a person’s physical or mental health. The pattern of continuous nicotine use is evident over a period of at least one month. Harm to health of the individual occurs due to one or more of the following: (1) direct or secondary toxic effects on body organs and systems; or (2) a harmful route of administration.

**Exclusions:** - Episode of harmful use of nicotine - Nicotine dependence