ADDICTION MEDICINE

Recreational drugs

  • 3 main types – stimulants, depressants/sedatives, hallucinogens


Table 12.4
Illicit substance abuse: a summary of hallmarks

DrugPhysical symptomsLook forDangers
Amphetamines including methamphetamines
 (3 forms)
speed—powder
base—oily paste
ice—crystalline
Aggressive or agitated behaviour; giggling; silliness; euphoria; rapid speech; fever; confused thinking; anorexia; insomnia; extreme fatigue; dry mouth; shakiness; anxietyJars of pills of varying colours; chain smoking; white powder and crystals can also be snorted or injected


Hypertension; death from overdose; hallucinations; paranoia; may cause temporary psychosis; stroke; cardiac arrest

Ecstasy
(methylene-dioxymethamphetamine)






Anxiety; panic; sweating; ‘loving’ feelings; jaw clenching, teeth grinding; bizarre overactive behaviour; hallucinations; increased heart rate, BP and body temperature; confidence; feelings of happiness and love
Small tablets of various colours, shapes, sizes and designs; also comes in powder and capsules





Convulsions; risk of death from heart attack, cerebral haemorrhage, hyperthermia, fluid imbalance with hyponatraemia, acute kidney failure, DIC, liver toxicity; hangover; depression

Fantasy (gamma-hydroxybutyrate)




Relaxation and drowsiness; dizziness; relaxed inhibition/euphoria; increased sexual arousal; impaired mobility and speechColourless, odourless liquid; also powder and capsules



Tremors and shaking; amnesia; coma; convulsions; death from high doses


BarbituratesDrowsiness; stupor; dullness; slurred speech; drunk appearance; vomitingPills of various coloursDeath from overdose or as a result of withdrawal; addiction; convulsions
Cannabis/marijuana






Initial euphoria; floating feeling; sleepiness; lethargy; wandering mind; enlarged pupils; lack of coordination; craving for sweets; changes of appetite; memory impairment; tacchycardiaStrong odour of burnt leaves; small seeds in pocket lining; cigarette paper; discoloured fingers



Inducement to take stronger narcotics; recent medical findings reveal that prolonged usage causes cognitive defects, precipitates or exacerbates schizophrenia; hyperemesis
Volatile substances including glue, solvents or petrol sniffing

Aggression and violence; drunk appearance; slurred speech; dreamy or blank expression; hallucinations; ataxiaTubes of glue; glue smears; large paper or plastic bags or handkerchiefs

Lung/brain/liver damage; death through suffocation or choking


LSD (lysergic acid diethylamide)




Severe hallucinations; feelings of detachment; incoherent speech; cold hands and feet; vomiting; laughing and crying
Cube sugar with discolouration in centre; strong body odour; small tube of liquid

Suicidal tendencies; unpredictable behaviour; chronic exposure causes brain damage; LSD causes chromosomal breakdown
Narcotics

(a) opioids (e.g. heroin)





Stupor/drowsiness; marks on body; watery eyes; loss of appetite; running nose; constricted pupils; loss of sex drive; agitation; hypoventilation

Needle or hypodermic syringe; cotton; tourniquet— string, rope, belt; burnt bottle, caps or spoons; bloodstain on shirt sleeve; glass in envelopes
Death from overdose; respiratory depression; mental deterioration; destruction of brain and liver; hepatitis; embolisms


(b) cocaine





Similar effects to amphetamines—muscle pains, irritability, paranoia, hyperactivity, jerky movements, euphoria, dilated pupils
Powder: in microwave ovens; inhaled, snorted or injected



Hallucinations; death from overdose—sudden death from arrhythmias; seizures; mental disorders; severe respiratory problems

A street drug dictionary

Amphetamines or uppers
BenzedrineRoses, beanies, peaches
DexedrineDexies, speed, hearts, pep pills, fast, go-ee, uppers, sulphate
MethamphetaminesMeth, crystals, white light, ice, whiz
DrinamylPurple hearts, goof balls
Amphetamine derivatives
Ecstasy
Crank
E, eggs, eckies, XTC, ‘the love drug’, Mitsubishis, MDMA, vitamin E, X, Adam, death Crystal M, crank
Hallucinogens
LSDAcid, blue cheer, strawberry fields, barrels, sunshine, pentagons, purple haze, peace pills, blue light, trips
Cannabis (Indian hemp)Hash, resin
1 Hashish (the resin)Pot, tea, grass, hay, weed, locoweed, Mary Jane, rope, bong, jive, Acapulco gold
2 Marijuana (from leaves)Reefers, sticks, muggles, joints, spliffies, head, smoko, ganga
CigarettesBlow a stick, blast a joint, blow, get high, get stoned
Smoking pot
Narcotics
MorphineMorph, Miss Emma
HeroinH, Big H, Big Harry, GOM (God’s own medicine), crap, junk, horse dynamite (high-grade heroin), lemonade (low-grade heroin). Injection of dissolved powder: mainlining, blast, smack. Inhalation of powder: sniffing
CocaineCoke, snow, lady of the streets, nose candy, ICE, snort, C, flake, rock, blow, vitamin C, crack, shabu, baby
H & CSpeed balls
OxycontinHillbilly heroin
Miscellaneous
FantasyGBH (grievous bodily harm), liquid G, liquid E, liquid ecstasy, liquid X, fantasy
BarbituratesDevils, barbies, goof balls
BenzodiazepinesRowies, moggies
Ketamine‘K’, vitamin K, special K, K hole
SolventsChroming

Substance Use Toxicity and Management Summary


🔷 Stimulants

Examples: Amphetamines, Cocaine, MDMA (Ecstasy)
Clinical Effects:

  • CNS excitation, sympathomimetic features
  • Diaphoresis, flushing, mydriasis
  • Hallucinations, agitation
  • May precipitate:
    • Acute coronary syndromes (ACS)
    • Arrhythmias
    • Hypertension, possible hypotension with severe toxicity

Management:

  • Sedation (e.g. benzodiazepines)
  • IV fluid resuscitation
  • Cooling measures for hyperthermia
  • Monitor ECG and cardiovascular function

🔷 Cannabis Toxicity

Clinical Features:

  • Ocular: Red eyes, ↓ intraocular pressure (IOP)
  • Autonomic: Dry mouth, dry skin, ↑ heart rate
  • Neurological/psychiatric:
    • Depersonalisation, disorientation
    • ↓ inhibition, mood changes, memory impairment, poor attention
    • Psychosis, agitation
  • Hyperemesis syndrome

Management:

  • Symptomatic treatment:
    • Antiemetics
    • Benzodiazepines (if severe agitation or anxiety)
    • Antipsychotics (if psychotic features)

🔷 Opioid Overdose

Clinical Features:

  • CNS depression: Drowsiness, coma
  • Respiratory depression
  • Hypothermia
  • Miosis (pinpoint pupils)
  • ↓ HR and BP (but may be normal)

Management:

  • Airway support and ventilation
  • Naloxone IV boluses:
    • Start with 100 micrograms (mcg) IV, repeat every 2–3 minutes as needed
    • Titrate to respiratory rate >10/min
    • Consider continuous infusion if long-acting opioids involved

🔷 Opioid Withdrawal

Preferred pharmacotherapy: Buprenorphine-controlled withdrawal
Used to prevent withdrawal symptoms during detoxification (vs long-term maintenance).

Initial Buprenorphine Regimen:

  • Day 1: 4–8 mg SL as a single daily dose
  • Day 3: Can increase to 12 mg
  • Gradually taper over 3–5 days

Adjunctive Treatments:

  • Clonidine: 5–15 mcg/kg/day orally in 3 divided doses × 7–10 days, then taper
  • Diazepam: 5–20 mg PO QID with caution (risk of sedation/overdose)
    • Use only if supervised
  • Note: Buprenorphine is preferred over clonidine or methadone in withdrawal

🔷 Opioid Maintenance Treatment (for long-term dependence)

Should be initiated with specialist input.

1. Methadone

  • Initial: 20 mg PO daily
  • Stabilisation: Gradual increase over 3 weeks
  • Maintenance: 50–80 mg/day (max 120 mg/day)
  • Caution: Doses >40 mg can cause overdose, especially in unwell patients

2. Buprenorphine

  • Initial: 2–8 mg SL daily
  • Maintenance: Titrate to 8–24 mg/day or alternate-day dosing
  • Safer profile: Lower risk of overdose, but may precipitate withdrawal if started too soon after full opioid use

3. Naltrexone

  • Requires opioid-free state: use naloxone challenge test first
  • Initial: 25 mg PO on Day 1, then increase to 50 mg daily from Day 2
  • Requires close supervision and comprehensive counselling

🔷 Key Notes on Opioid Dependence

Offer naloxone (Take Home Naloxone) to high-risk patients

Natural history: Many individuals outgrow dependence, with many achieving recovery by mid-30s

Psychosocial support (counselling, housing, employment, peer support) is essential

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