Chapter 11 – Substance-Related Disorders Flashcards
Behaviour based on the pathological need for a substance or activity; it may involve the abuse of substances, such as nicotine, alcohol, or cocaine, or gambling
Addictive behaviour
Drug that affects mental functioning
Psychoactive substance
Alcohol, nicotine, barbiturates, tranquilizers, amphetamines, heroin, ecstasy, and marijuana.
Poisonous nature of a substance
Toxicity
For diagnostic purposes, addictive or substance-related disorders are divided into two major categories:
- Conditions that involve organic impairment resulting from the prolonged and excessive ingestion of psychoactive substances, for example, and alcohol abuse dementia disorder involving amnesia
- Substance-induced organic mental disorders and syndromes. These conditions stem from toxicity, the poisonous nature of the substance, or physiological changes in the brain due to vitamin deficiency
Maladaptive pattern of substance use manifested by recurrent and significant adverse consequences related to the abuse of the substance
Substance abuse
Severe form of substance use disorder involving physiological dependence on the substance, tolerance, withdrawal, and compulsive drug taking
Substance dependence
Need for increased amounts of a substance to achieve the effects
Tolerance
Intellectual, emotional, for physical retreat. Physical symptoms such as sweating, tremors, and tension that accompany abstinence from the drug
Withdrawal
A term used to characterize a person who is addicted to alcohol
Alcoholic
Dependence on alcohol that seriously interferes with life adjustment
Alcoholism
The world health organization no longer recommends the term alcoholism but prefers the term alcohol dependence syndrome, a state, psychic and usually also physical, resulting from taking alcohol, characterized by behavioural and other responses that always include a compulsion to take alcohol on a continuous or periodic basis in order to experience it psychic effects, and sometimes to avoid the discomfort of its absence; tolerance may or may not be present
Describe the prevalence, comorbidity, and demographics of alcohol abuse and dependence
It is estimated that 50% of adults who are 18 or older our current regular drinkers and only 21% our lifetime abstainers. An estimated 22.2 million persons were classified with substance dependence or abuse in the past year.
Heavy drinking is associated with folder ability to injury, marital discord, and becoming involved in intimate partner violence. The lifespan of the average person with alcohol dependence is about 12 years shorter than that of the average person without this disorder. Alcohol lowers performance on cognitive tasks, and organic impairment including brain shrinkage occurs in a high proportion of people.
Cuts across all age, educational, occupational, and Socio economic boundaries.
The traditional gap between men and women has narrowed when it comes to the development of substance abuse disorders and there do not seem to be important differences in rates of alcohol abuse between black and white Americans, although made of Americans tend to have higher rates of alcohol abuse, and Asian Americans tend to have lower usage.
Problem drinking may develop during any life period from early childhood through old age.
Over 37% suffer from at least one coexisting mental disorder and depression ranks high. Also Haeckel more bitty with eating disorders and many commit suicide. Also with personality disorder.
Describe the clinical picture of alcohol abuse, including the biological and psychological effects of chronic consumption of alcohol
Tendency toward decreased sexual inhibition and lower sexual performance. Experience of blackouts or lapses of memory and for heavy drinkers, even moderate drinking can elicit memory lapses. The hangover.
Effects on the brain: at lower levels stimulate certain brain cells and activates the brains pleasure area, which release opium like endogenous opioids that are stored in the body. At higher levels, depresses brain functioning, inhibiting one of the brain excitatory neurotransmitters, glutamate, which in turn slows down activity in parts of the brain. Inhibition of glutamate impairs the organisms ability to learn and affects higher brain centers, impairing judgement and other rational processes and lowering self-control. Some degree of motor on coordination soon become the parent and the drink is discrimination and perception of cold, pain, and other discomforts are dulled. The drinker experiences a sense of warmth, expansiveness, and well-being.
Development of alcohol dependence
The physical effects of chronic alcohol use: alcohol that is taken in must be assimilated by the body, except for about the 5 to 10% that is eliminated through breath, urine, and perspiration, the work of alcohol metabolism is done by the liver. When large amounts are ingested, the liver maybe seriously overworked and eventually irreversible damage such as cirrhosis which involves extensive stiffening of the blood vessels.
Alcohol is also a high calorie dress, so consumption reduce is a drinkers appetite for other food and the drinker can suffer from malnutrition. It also impairs the bodies ability to utilize nutrients, so the nutritional deficiency cannot be made up by popping vitamins.
Psychosocial effects of alcohol abuse and dependence: chronic city, oversensitivity, and depression. Excessive use can result in impaired reasoning, poor judgment, and gradual personality deterioration and behaviour typically becomes coarse and inappropriate and assumes increasingly less responsibility, loses pride in personal appearance, neglect spouse and family, and becomes generally touchy, irritable, and unwilling to discuss the problem. Maybe unable to hold a job and generally becomes unqualified to cope with new demands that arise
Psychoses: Acute reactions usually last only a short time and generally consist of confusion, excitement, and delirium. For those who drink excessively for a long time, a reaction called alcohol withdrawal delirium formally known as delirium tremens may occur where slight noises or suddenly moving objects may cause considerable excitement and agitation. Usually happens following a prolonged drinking spree when the person enters a state of withdrawal. Symptoms include disorientation for time and place; vivid hallucinations particularly of small fast-moving animals like snakes rats and roaches; acute fear, in which these animals may change in form, size, or colour in terrifying ways; extreme suggestibility in which a person can be made to see almost any animal if its presence is merely suggested; marked tremors of the hands, tongue, and lips; and other symptoms including perspiration, fever, a rapid and weak heartbeat, a costed tongue, and foul breath. Last from 3 to 6 days and is generally followed by a deep sleep and upon awakening, few symptoms remain.
A second related psychosis is persisting alcohol disorder or alcohol annestic disorder (formerly known as Korsakoff’s syndrome). The outstanding symptom is a memory defect particularly with regard to recent events, which is sometimes accompanied by falsification of events. The person may not recognize pictures, faces, rooms, and other objects that they had just seen, although they may feel that these people or objects are familiar. Increasingly tend to fill in their memory gaps with reminiscences and fanciful tales. The memory disturbance itself seems related to an inability to form new associations in a manner that renders them readily retrievable. Thought to be due to vitamin B deficiency and other dietary inadequacies.
Acute delirium associated with withdrawal from alcohol after prolonged heavy consumption; characterized by intense anxiety, tremors, fever and sweating, and hallucinations
Alcohol withdrawal delirium or delirium tremens
Centre of psychoactive drug activation in the brain. This area is involved in the release of dopamine and in mediating the rewarding properties of drugs
Mesocorticolimbic dopamine pathway or MCLP
Describe the biological causal factors in the abuse and dependence on alcohol
Biological causal factors:
The neurobiology of addiction – central to the neurochemical process underline addiction is the role the drug place in activating the pleasure pathway. The mesocorticolimbic dopamine pathway is the centre of psychoactive drug activation in the brain. Alcohol produces euphoria by stimulating this area in the brain. Drug ingestion or behaviours that lead to activation of the brain reward system are reinforced, so further use is promoted.
Genetic vulnerability – heredity probably plays an important role in a persons developing sensitivity to the addictive power of drugs like alcohol. Almost 1/3 of alcoholics had at least one parent with an alcohol problem. For males, having one alcohol parents increase the rate of alcoholism from 12.4% to 29.5% and having two alcoholic parents increase the rate 241.2%. For females with no alcoholic parents the rate was 5%, one alcoholic parent 9.5%, and two parents 25%.
And alcohol-based personality has been described as an individual who is usually an alcoholic’s child, who has an inherited predisposition toward alcohol abuse and who is impulsive, prefers taking high risks, and is emotionally unstable.
Free alcoholic men tend to experience a greater lessening of feelings of stress with alcohol ingestion then do nonalcoholic men and also show different Alpha wave patterns on EEGs and have been found to have larger condition physiological responses to alcohol cues.
Genetic influences and learning – a person must be exposed to the substance to a sufficient degree for the addictive behaviour to appear. The development of alcohol related problems involve living in an environment that promotes initial as well as continuing use of the substance. People become conditioned to stimuli and tend to respond in particular ways as a result of learning.
Describe the psychosocial causal factors in alcohol abuse and dependence
Failures in parental guidance: stability is often lacking in families of substance abuse or’s. Children who have parents who are extensive alcohol or drug abusers are vulnerable to developing substance abuse and related problems and who are exposed to negative role models and family disfunction or experience other negative circumstances because the adults around them provide limited guidance and often falter on the difficult steps they must take in life.
Psychological vulnerability: personality factors related to having a family history of alcoholism are associated with the development of alcohol use disorders. Many potential alcohol abusers tends to be emotionally immature, expect a great deal of the world, require an inordinate amount of praise and appreciation, react to failure with marked feelings of hurt and inferiority, have low frustration tolerance, and feel inadequate and unsure of their abilities to for fill expected male or female roles. Also more impulsive and aggressive than those at low risk for abusing alcohol.
Stress, tension reduction, and reinforcement: patients undergoing substance abuse and treatment have shown high levels of trauma in their prior history. High exposure to threatening situations and atrocities, such as Iraq war veterans, was associated with a positive screen for alcohol abuse.
The typical alcohol abuser is discontented with their lives and is unable or unwilling to tolerate tension and stress. High degree of association between alcohol consumption and negative affectivity such as anxiety and somatic complaints. In other words, alcoholics drink to relax.
Expectations of social success: many people especially young adolescents, expect that alcohol use will lower tension and anxiety and increase sexual desire and pleasure in life. According to the reciprocal-influence model, adolescence begin drinking as a result of expectations that using alcohol will increase their popularity and acceptance by their peers. Time and experience have moderating influences on these alcohol expectancies, there was a significant decrease in outcome expectancy overtime.
Marital and other intimate relationships: adults with less intimate and supportive relationships tend to show greater drinking following sadness or hostility than those with close peers and with more positive relationships. Excessive drinking often begins during crisis. In marital or other intimate personal relationships, particularly those that we do hurt and self-evaluation. Excessive use of alcohol is one of the most frequent cause of divorce in the US and is often a hidden factor in the two most common causes, financial and sexual problems.