Pathophysiology
- Mesolimbic dopamine pathway hijacking: Substances activate the reward circuit (ventral tegmental area to nucleus accumbens) with dopamine surges far exceeding natural rewards, creating powerful reinforcement of substance-seeking behavior
- Neuroadaptation: Repeated substance use causes tolerance (downregulation of dopamine receptors requiring more substance for the same effect) and dependence (withdrawal symptoms on cessation as the brain has adapted to the presence of the substance)
- Anhedonia: Chronic dopamine receptor downregulation produces the inability to feel pleasure from normal activities, driving compulsive use as the only remaining source of reward
- Prefrontal cortex impairment: Reduced executive control, impulse regulation, and decision-making capacity — the "wanting" system (nucleus accumbens) overrides the "stopping" system (prefrontal cortex)
- Substance-specific effects:
- Alcohol: CNS depressant; liver damage (cirrhosis), peripheral neuropathy, cardiomyopathy, Wernicke-Korsakoff syndrome
- Opioids: CNS and respiratory depression; constipation, needle-related infections, overdose death
- Stimulants (cocaine, methamphetamine): Cardiovascular damage, psychosis, malnutrition, dental destruction
- Benzodiazepines: CNS depression; withdrawal can cause fatal seizures (one of only two substance classes where withdrawal is life-threatening, along with alcohol)
- Genetic vulnerability: 40-60% of addiction vulnerability is genetic, involving variations in dopamine receptor density and metabolism enzymes
Signs and Symptoms
- Craving and compulsive substance seeking. Loss of control over amount or frequency
- Continued use despite social, occupational, and health consequences
- Tolerance and withdrawal symptoms
- Neglect of personal hygiene, nutrition, and health
- Physical signs: Injection marks (track marks), poor dental health, weight changes, skin picking/sores, tremor
- Behavioral signs: Mood swings, irritability, social withdrawal, financial problems
- Co-occurring symptoms: anxiety, depression, insomnia, chronic pain
- Opioid-induced hyperalgesia: Paradoxical increase in pain sensitivity in chronic opioid users and those in recovery
Red Flags
- Active intoxication: Altered consciousness, unsteady gait, slurred speech, incoherence — absolute contraindication (impaired ability to give informed consent, unpredictable responses, safety risk)
- Acute alcohol or benzodiazepine withdrawal: Tremor, tachycardia, diaphoresis, confusion, seizure risk — medical emergency requiring supervised detoxification. Do not treat
- Injection site infections: Active cellulitis, abscess, or septicemia at IV injection sites — local or systemic contraindication. Refer for medical treatment
- Suicidal ideation: SUD significantly increases suicide risk, particularly during withdrawal or early recovery
Massage Therapy Considerations
- Massage is highly indicated for clients in addiction recovery: Benefits include anxiety and stress reduction, improved sleep quality, reduced muscle tension and pain (common in withdrawal), safe therapeutic touch addressing touch deprivation, and parasympathetic nervous system activation
- Trauma-informed care is essential: Obtain clear consent before each technique, explain what you will do before doing it, check in frequently, allow the client to maintain control over position, draping, and pressure. Many clients in recovery have trauma histories
- Opioid-induced hyperalgesia: Clients in opioid recovery often have paradoxically increased pain sensitivity. Use conservative pressure and expect heightened tissue reactivity
- Peripheral neuropathy: Alcohol-related neuropathy (glove-and-stocking distribution) prohibits deep tissue work in affected areas. Assess sensation before treating distal extremities
- Medication awareness: Clients on methadone or buprenorphine/naloxone (Suboxone) are safe to treat but may have altered pain perception. Gabapentin is increasingly used for alcohol use disorder and may cause drowsiness. Multiple psychiatric medications are common — assess for sedation and orthostatic hypotension
- Body shame: Shame about scars, injection marks, or body condition is common. Respect boundaries around body exposure without drawing attention to physical signs
- Active intoxication is an absolute contraindication: Impaired consent, unpredictable physiological responses, and safety risk
- Non-judgmental relationship: SUD is a chronic neurobiological condition, not a moral failing. The therapeutic relationship depends on genuine non-judgment
CMTO Exam Relevance
- Active intoxication contraindicates treatment due to impaired consent and safety risk
- Trauma-informed care principles apply to most clients in recovery
- Opioid-induced hyperalgesia (increased pain sensitivity in recovery) is a clinically important concept
- Alcohol and benzodiazepine withdrawal can be life-threatening (seizures) — differentiate from opioid withdrawal (miserable but not fatal)
- Peripheral neuropathy from alcohol use requires sensation assessment before deep work
Key Takeaways
- Substance use disorder is a chronic neurobiological condition driven by dopamine pathway hijacking and neuroadaptation — not a moral failing.
- Massage is a valuable complementary therapy for addiction recovery, addressing anxiety, sleep, pain, and touch deprivation.
- Active intoxication is an absolute contraindication due to impaired consent and unpredictable responses.
- Trauma-informed care principles (consent, explanation, client control) apply to most clients in recovery.
- Opioid recovery clients may have paradoxically heightened pain sensitivity (opioid-induced hyperalgesia). Use conservative pressure.
- Alcohol and benzodiazepine withdrawal can cause fatal seizures. Do not treat during acute withdrawal without medical supervision.