The final stage of substance use disorder is a state of profound physiological decompensation characterized by irreversible damage to internal organs and the nervous system. At this stage, complete personality degradation occurs, and the consumption of psychoactive substances becomes necessary solely to prevent severe withdrawal symptoms.
Neuropsychiatric ChangesComplete personality degradation, cognitive decline, and loss of interest in life.
Decreased ToleranceSubstance doses decrease because the body is exhausted and incapable of previous reactions.
Multiple Organ FailureSevere metabolic disorders leading to the failure of vital organ systems.
High MortalityMain causes include cardiac and renal failure, infections, and overdoses.
Pathophysiological Essence
In the final stage, a fundamental restructuring of the body's reactivity occurs. Psychoactive substances (PAS) and their metabolites integrate into the metabolic processes of nervous tissue and organs, becoming obligatory regulators. Key changes include:
Loss of protective reflexes (cough, gag reflexes).
Encephalopathy, leading to a decreased tolerance to the substance.
Cachexia — an extreme degree of physical wasting against the background of impaired digestion and metabolism.
Key Syndromes
The clinical picture of the final stage is determined by five interrelated syndromes:
Physical dependence — metabolic requirement for the psychoactive substance.
Decreased tolerance — transition to infrequent but mandatory small doses to relieve withdrawal.
Multiple Organ Dysfunction Syndrome (MODS) — complex organ dysfunction.
Personality degradation — loss of individuality and intellectual collapse.
Withdrawal syndrome — a severe condition upon cessation of the substance.
Somatic Complications
The patient's body is in a state of decompensation. The most significant lesions include:
Liver: development of fatty degeneration and cirrhosis, which impairs detoxification functions.
Cardiovascular and respiratory systems: progressive circulatory and respiratory failure.
Immune system: pronounced immunodeficiency, paving the way for severe infectious diseases.
Mnemonic
To remember the 5 core syndromes, use the mnemonic «PAD-MC»: Physical dependence, Abstinence (withdrawal), Degradation of personality, Multiple organ failure, Cachexia.
Frequently asked questions
What is the detailed pathogenesis of cachexia in the final stage of substance abuse?
Cachexia in the final stage of substance and drug addiction is cited as one of the key syndromes and a manifestation of multiple organ dysfunction syndrome (MODS).
The pathogenesis of MODS includes:
Severe metabolic disorders;
Circulatory disorders;
Significant structural changes in organs and tissues.
The clinical complex of changes includes:
Progressive dyspeptic disorders: lack of appetite, vomiting, diarrhea, constipation;
Digestive impairment leading to cachexia;
Circulatory insufficiency;
Respiratory failure.
Why does tolerance to psychoactive substances decrease in the final stage?
This is due to profound encephalopathy and the depletion of the body's compensatory reserves. Organs can no longer process previous doses, and the substance is required solely to maintain minimal baseline metabolism.
What are the primary causes of death in substance abuse?
Death most frequently results from cardiac or renal failure, overdoses, and infectious complications developing against the background of severe immunodeficiency.
How does the final stage differ from previous stages?
The main difference is the shift from seeking euphoria to 'survival' (avoiding withdrawal) and the development of irreversible multiple organ failure and personality degradation.
Go deeper
Mechanisms of immunodeficiency development in chronic intoxication.
Pathogenesis of hepatic steatosis in substance-dependent individuals.
Comparative characteristics of suicidal versus accidental poisonings.
Effects of psychoactive substance metabolites on the regulatory functions of the nervous system.
Global mortality statistics related to chronic alcohol and substance abuse.