Understanding Cognitive Disorders

Transcription

1 Understanding Cognitive Disorders Developed by DATA of Rhode Island through a special grant from the RI Department of Human Services Q: What are cognitive disorders? (problem with memory, attention, etc.) Q: Why are cognitive disorders relevant to abnormal psychology? (affect behavior and personality) 1

2 Goals To familiarize trainees with common types of cognitive disorders To improve trainee understanding of the functional impairment of persons with cognitive disorders To identify common co-occurring occurring other disorders To identify how approaches to persons with cognitive disorders may be modified 2

3 Definition Cognitive disorders = disorders in which the central feature is the impairment of memory, attention, perception, and/or thinking processes. Cognitive disorders sometimes underpin other mental disorders such as depression, paranoia and hallucinations Some disorders are transient and others are persisting and progressive 3

4 Background Used to be called organic brain disorders Meant a dysfunction of the brain Today are referred to as cognitive disorders Better reflects nature of problems Person with cognitive disorder often requires some accommodation in approach and planning Certain types of disorders may require immediate medical attention - All mental disorders involve some dysfunction in the brain, so organic isn t very descriptive 4

5 Screening for Cognitive Disorders Mental Status : brief interview used to assess cognitive disorders 5 major components: 1. Appearance and behavior 2. Mood and affect 3. Thought 4. Perception 5. Sensorium and Intellect Sensorium = consciousness and awareness of surroundings 1. Signs of disorder through observation, motor activity, speech and attitude 2. Feelings and emotional tone 3. Stream of thought (productive and continuous), form of thought (coherent or loose), and content 4. Look for hallucinations, depersonalization, or derealization 5. Orientation x3: time, place, person; levels of consciousness awake coma 5

6 Cognitive Disorders There are multiple types of cognitive disorders. These include: Delirium, dementia including traumatic brain injury and development disabilities All cog disorders share basic feature of primary dysfunction being in cognitive functions including memory, attention, perception, and thinking. All involve a change from previous functioning levels. 6

7 1. Features Delirium Key feature is disturbed consciousness Associated features include: Clouded sensorium no clear awareness of surroundings Problems with attention Disturbance in memory Incoherent speech Perceptual disturbances (e.g., hallucinations) 7

8 Course Delirium (cont.) Acute onset (within hours or days) and transient course (days to a few weeks) No such things as life-long long delirium Can be superimposed on another disorder (e.g., dementia) 8

9 Course (cont.) Tends to occur more in certain people: Elderly Medically ill (e.g., cancer; AIDS) Dementia Substance Abusers 9

10 3. Causes Delirium (cont.) Drugs: intoxication, withdrawal, poison Delirium tremens = tremors and vivid hallucinations of vermin associated with alcohol withdrawal Medications Infection Head injury Various kinds of brain trauma (e.g., stroke) DTs can be fatal 10

11 Delirium (cont.) 4. Responding to Delirium Attending to precipitating problem Treating medical condition; counteracting effects of substance withdrawal; using antipsychotic med Recognizing people at risk and paying special attention to those cases to avoid delirium Usually requires professional intervention 11

12 1. Features Dementia Key feature of most dementia is gradual impairment of multiple cognitive abilities including memory, language, and judgment With impaired social/occupational functioning Often global cognitive impairment (e.g., vocabulary and language) First signs: personality change and memory loss 12

13 Dementia (cont.) 2. Statistics and course Incidence is highest in older adults, but can onset at almost any age Not accurate to give one prevalence rate, because it differs by age group: 65-74: 1.29% 75-84: 3.83% 85+: 10.14% 13

14 Statistics Incidence is the same for males and females Onset varies by type of dementia e.g., Alzheimer s s vs. vascular dementia People over age 75 at increased risk for dementia - Alzheimer s onset is usually in late adulthood; vascular dementia is caused by blocked artery and could happen at any time 14

15 Dementia (cont.) 3. Example: Alzheimer s s Disease (most common) A. Development of multiple cognitive deficits manifested by both: 1) Memory impairment 2) One (or more) of the following: a) Aphasia b) Apraxia c) Agnosia d) Disturbance in executive functioning Aphasia language disturbance (trouble comprehending language and/or trouble producing language) Apraxia can t carry out motor activities despite intact motor function (e.g., can t draw a clock when commanded but can do it) Agnosia failure to recognize or identify objects despite intact sensory function 15

16 Criteria (cont.) B. Significant impairment and decline C. Gradual onset and continuing decline - Rule out other dementias and mental disorders (depression) 16

17 Alzheimer s s (cont.) Onset usually in 60 s s or 70 s Early signs in 40 s s and 50 s s (presenile( dementia) Definitive diagnosis can only be made on autopsy where confirms: 1. Gross atrophy of the brain 2. Neurofibrillary tangles 3. Senile plaques -tangles of strand-like filaments - plaques: build up of gummy protein deposits 17

18 Dementia (cont.) 4. Causes of dementia Direct cause linked to type of dementia Plaques and tangles Alzheimer s Blocked artery vascular dementia Genetic factors linked to some dementias Multiple genes Alzheimer s s risk Single dominant gene Huntington s s disease Head trauma (Traumatic Brain Injury) 18

19 Causes (cont.) Vascular dementia can be influenced by diet as well as genetic factors (link to heart disease) Psychosocial factors Higher education level is associated with lower dementia risk Social resources and family support can improve life for patients with dementia 19

20 Dementia (cont.) 5. Treatment of dementia Limited some drugs can improve cognitive functioning, but only temporary Psychosocial treatments Memory wallet Memory skills training Teach to use navigational cues to avoid getting lost In more progressed cases, more active care giver roles required -Memory wallet can include pictures and names of loves ones, friends to help social interactions -Memory skills training using index cards; keeping a notebook to help remember -Teach to use road signs, cues around living area to help avoid getting lost if wander away -Persons with dementia are at higher risk of exploitation and vicimization 20

21 Traumatic Brain Injury (TBI) 50 to 70% of persons with TBI resulting in hospitalization are intoxicated at the time of the injury 50% of TBI survivors return to alcohol and/or drug use after the injury TBI occurs in about 2% of population TBI is heavily associated with certain types of other disorders including substance abuse, personality disorder and ADHD 21

22 Developmental Disability A condition that begins before the age of 21 and is likely to continue indefinitly. Caused by a mental or physical impairment Results in substantial impairment in functional abilities including language, learning, decision making, self care and other areas. Types of disabilities include: Mental retardation, autism, cerebral palsy and other disorders 22

23 Developmental Disabilities and Cognitive Functioning Cognitive issues in various levels of mental retardation Cognitive issues in Autism Spectrum Disorder Cognitive issues in Asperger s Disorder Cognitive issues in Pervasive Developmental Delay Cognitive issues in childhood TBI Cognitive issues in lead poisoning, drug addiction in-utero utero,, fetal alcohol syndrome 23

24 Learning Disabilities Defined: a disorder in one or more of the basic psychological processes involved in understanding or in using written or spoken language. A learning disability may manifest itself in an imperfect ability to listen, think, speak, read, write, spell, or do mathematical calculations Common Learning Disabilities: ADHD, Dyslexia, developmental reading and writing disorders 24

25 Common co-occurring occurring mental disorders It is estimated that 40% or more of persons with cognitive disorders have other mental disorders. These include: Depression and anxiety (most common) Substance Dependence (particularly with persons with TBI) Persons with milder levels of mental retardation are at higher risk of substance abuse Persons with cognitive disorders are at higher risk of victimization and trauma 25

26 Impact of Cognitive Impairment Neuropsychological deficits contribute to the inattention, distractibility and apparent lack of motivation early in services. Understanding the cognitive weaknesses and strengths is useful for making and in providing realistic with realistic expectations about service goals and expectations. 26

27 Lessons Learned about persons with cognitive disorders Slowed mental processing = increased stress and anxiety Word finding difficulty = decreased verbal communication Poor retrieval = loss of learned information Executive difficulty = poor self-cueing, difficulty with understanding, empathy, planning and problem solving Executive difficulty = poor impulse control, failure to learn from negative experience, poor self guidance. 27

28 Practical tips for interviewing a person with Cognitive Disorders Often persons with cognitive disorders experience a high degree of shame and embarrassment about their limitation Listening Skills (LISTEN CAREFULLY) Look at the person to whom you are speaking Interest yourself in the conversation Speak less than half the time Try not to interrupt or change the topic One question at a time Simple and clear language Clarify what is said Notice body language and facial expression Don t t rely on verbal instructions or promises Use visual aids to support learning and retention 28

29 More Tips Break tasks into smaller steps, and give directions verbally and in writing; giving the clients more time to finish certain tasks that may require reading or writing; Make sure the person with reading problems has written materials read out loud so they better understand Make sure the person with listening difficulties has materials in writing When possible allow the person to review information with a trusted other person 29

30 Modifying services for persons with cognitive impairments Model Motivatiional Behavioral Concent. Impairmnt Summarize: Verbal Cues, Nonverbal Cues Repeat info Use Nonverbal & verbal cueing Memory Impairmnt Familiariza- tion,, notes, audio tape, rehearsal, homework Provide Verbatim written materials Memory books Homework Executive Impairmnt Role rever. Paper/pen problem solving Coaching Coaching Role Plays 30

31 Summary Cognitive disorders involve an impairment of memory, attention, perception, and thinking that represents an impairment in functioning With adaptations of services and approach persons with disabilities can successfully participate in services 31

32 QUESTIONS 32