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The no smoking sign--insular infarction
Hebah Hefzy1, Rachel Wulf Silver, Brian Silver
1Department of Neurology, Henry Ford Hospital, Detroit, MI 48202, USA.
Summary
Brain damage to the insula can cause immediate, unintentional smoking cessation. This case report highlights the insula's role in nicotine addiction, suggesting a potential mechanism for abrupt smoking cessation.
Area of Science:
- Neurology
- Addiction Medicine
- Neuroscience
Background:
- Cigarette smoking is a leading cause of preventable death.
- Smokers with insular brain damage are significantly more likely to quit smoking spontaneously.
Observation:
- A 58-year-old woman with a history of heavy smoking experienced an insular ischemic stroke.
- Following the stroke, she abruptly ceased smoking without intention or aids, reporting she 'forgot' she used to smoke.
Findings:
- The patient's insular stroke led to complete and unintentional smoking cessation.
- This suggests the insula plays a critical role in maintaining the habit of smoking.
Implications:
- Insular damage may serve as a marker for the neural basis of smoking addiction.
- Further research into insular hypocretin pathways could reveal novel smoking cessation targets.
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