Tobacco-Related Disorders: Nicotine Dependence & Health Risks

Tobacco-related disorders primarily involve nicotine dependence, leading to addiction and severe health consequences. The DSM-5 classifies these under Tobacco Use Disorder, while the ICD-10 also includes withdrawal and intoxication.

1. Tobacco Use Disorder (Nicotine Dependence)

DSM-5 Criteria (≥2 symptoms within 12 months)

  • Impaired Control: Smoking more/longer than intended.
  • Cravings: Strong urges to use tobacco.
  • Tolerance: Needing more to feel the same effect.
  • Withdrawal: Irritability, anxiety, difficulty concentrating when stopping.
  • Neglected Responsibilities: Work or social life suffers due to smoking.
  • Continued Use Despite Harm: COPD, cancer, heart disease.

Severity Levels:

  • Mild (2–3 symptoms)
  • Moderate (4–5 symptoms)
  • Severe (6+ symptoms)

High-Risk Groups:

  • People with mental health disorders (depression, schizophrenia).
  • Adolescents (early use increases addiction risk).

2. Nicotine Withdrawal

Symptoms (Peak at 2–3 days, last weeks–months):

  • Mood: Irritability, anxiety, depression.
  • Cognitive: Poor concentration, restlessness.
  • Physical: Increased appetite, insomnia, headaches.

Duration:

  • Acute symptoms fade in 2–4 weeks, but cravings may persist for months.

Treatment:

  • Nicotine Replacement Therapy (NRT): Patches, gum, lozenges.
  • Medications: Bupropion (Wellbutrin), varenicline (Chantix).

3. Nicotine Intoxication (Rare, but Possible)

Symptoms (Overuse of nicotine gum/patches/vaping):

  • Nausea, vomiting, dizziness.
  • Rapid heartbeat, tremors.

Overdose Risk:

  • Rare from smoking, but possible with e-cigarette liquid ingestion.

Health Risks of Chronic Tobacco Use

  • Cancer: Lung, throat, mouth, bladder.
  • Cardiovascular: Heart disease, stroke, hypertension.
  • Respiratory: COPD, emphysema, chronic bronchitis.
  • Pregnancy Risks: Low birth weight, preterm delivery.

Treatment Options

1. Medications for Cessation

  • Nicotine Replacement Therapy (NRT):
    • Patches (long-acting), gum/lozenges (quick relief).
  • Varenicline (Chantix): Blocks nicotine receptors, reduces cravings.
  • Bupropion (Zyban): Antidepressant that reduces withdrawal symptoms.

2. Behavioral Therapies

  • Cognitive Behavioral Therapy (CBT): Identify triggers, coping strategies.
  • Motivational Interviewing (MI): Strengthen commitment to quit.
  • Support Groups: Nicotine Anonymous (NicA).

3. Harm Reduction (If Quitting Fails)

  • Switching to lower-risk products (e.g., nicotine pouches, vaping—though not risk-free).
  • Gradual reduction (tapering cigarette use).

When to Seek Help

✔ Failed quit attempts due to withdrawal/cravings.
✔ Health problems (e.g., coughing, shortness of breath).
✔ Desire to quit but struggling with addiction.

Emergency Situations:

  • Severe nicotine poisoning (e.g., child ingests vape liquid).