Psychiatry Flashcards
What are the 3 core symptoms of depression
Low/depressed mood
Anhedonia - loss of interest/pressure
Anergia
What are other typical symptoms of depression
- Poor Appetite
- Disrupted Sleep
- Psychomotor Retardation (sluggish) or agitation
- Decreased Libido
- Reduced ability to concentrate
- Feeling of worthlessness and inappropriate guilt
- Recurrent suicidal thoughts/attempts
What is the Diagnosis of Depression
- 2 core symptoms (Severe = 3) + 2 or more typical symptoms
- Symptoms present throughout the day
- For every/nearly every day
- For > 2 weeks
- Must represent change from normal personality
- Without drugs/alcohol, medical disorders or bereavement
What are the causes of depression
Biological - Hereditary, Familial, Low monoamine (Low serotonin, Low dopamine, Low noradrenaline)
Psychological - Personality trait, Low self esteem
Social - Disruption due to life events, stress and social isolation
What may be symptoms of severe depression
Cotard Syndrome - Nihilistic Delusions
Auditory and Visual Haluucinations
Delusions
What are differentials for depression
Psychotic Disorders Dysthymia Substance Misuse Dementia Sleep and Neurological Disorders Physical Illness Medication SE e.g Beta Blockers
What conservative management can be done for depression
Exercise Engaging in productive activity Socialising Improving Sleep - good sleep hygiene Relaxation Techniques
How is mild depression managed
Low intensity psychological interventions - sleep hygiene, anxiety management, guided self help (books, websites and apps), computerised CBT
How is moderate depression managed
Combination of Antidepressant + high intensity psychological intervention (CBT), group therapy, family therapy
How is severe depression managed
This includes psychotic depression, increased risk of suicide and atypical depression - THINK: S uicide plan U nexplained guilt or worthlessness I nability to function C concentration impaired I mpaired appetite D creased sleep E energy low
Urgent - Rapid mental health assessment and maybe inpatient admission - Give ECT &/or rapid prescription of Antidepressants
What are the NICE guidelines for Antidepressants
1st line: SSRI e.g Sertraline, Citralopram and Fluoxetine (<18yrs)
2nd line: Alternative SSRI
3rd line: SNRI (venlafaxine) or NaSSA/Tetracyclic (mirtazapine) if two SSRIs haven’t worked
4th line: Lithium, TCA, Monamine Oxidase Inhibitors
What are side effects from ECT
Amnesia
Headaches
Confusion
When is ECT used
When other treatments have been ineffective and a condition is life threatening (severe manic episode, severe depression, catatonia)
What is one contraindication for ECT
Cochlear Implant
What are the SE of SSRIs
The 8S’s
- Sodium (low)
- Serotonin Syndrome
- Sexual Dysfunction
- Sleep (insomnia)
- Sickness (nausea/vomiting) and Stomach Upset (diarrhoea, constipation, abdo pain)
- Size (weight gain)
- Stress
- Suicide (first 2 weeks increased risk of suicide)
How long do SSRIs take to work and what should you be aware of when starting them
Can take up to 4 weeks to work there may be initial worsening of symptoms and increased risk of suicide
Once effective dose of antidepressant how long should they be continued for and what symptoms can occur if you stop them suddenly
6 months
Flu like symptoms, headaches, shock like sensations, dizziness, insomnia - withdraw over 4 weeks or longer to reduce these
How do SSRIs work
Prevent reuptake of serotonin in the synaptic cleft therefore increasing Serotonin levels
What does mirtazapine do
Mirtazzzzapine makes you sleepy (Zzz)
Weight Gain
What is serotonin Syndrome
A life threatening condition caused by to much serotonin (co-administration of some antidepressants or not cross tapering can cause it) Classic Triad: - Neuromuscular Excitability - Autonomic Dysfunction - Altered Mental Status
Symptoms: Hyperthermia, Diaphoresis, Hypertension, Tachycardia, N/V, diarrhoea, Tremor, Hypertonia/rigidity, Hyperreflexia, Confusion, Seizure
How is serotonin syndrome managed
Immediately stop Antidepressants
Supportive care: fluid replacement, antihypertensives
Benzodiazepines: to sedate
Cooling Methods
What can antidepressants sometimes induce
A manic episode
What is a side effect of Citralopram
Dose dependent prolongation of QT interval so check ECG - unnoticed can lead to Torsades de Pointes
What is Mania
- Abnormally elevated, expansive or irritated mood and increased goal directed behaviour, energy and activity not attributable to organic psychic disorder or psychotropic substances
- Lasting for at least a week
- Significantly impairs function
- Patient requires hospitalisation
- There may be psychotic symptoms
What is hypomania
- Abnormally elevated, expansive or irritated mood and increased goal directed behaviour, energy and activity not attributable to organic psychic disorder or psychotropic substances
- Lasting at least 4 days
- Does not significantly impair function, hospitalisation or present
- No psychotic features
What symptoms may be seen in mania/hypomania
Mood:
- Irritability, Euphoria, Elevated mood
Behavior:
- Increased goal directed activity (Hyperactivity, Hyper-sexuality, increased libido, increased socialising, new projects)
- Increased talkativeness and pressure of speech
- Loss of social inhibition ( socially and sexually inappropriate, reckless actions)
- Decreased need to sleep
Cognition:
- Flight of Ideas and Racing thoughts
- Heightened self esteem/grandiosity
- Distractibility/Poor Concentration
Psychotic Symptoms: (definite manic)
- Delusions
- Hallucinations
What is the main difference between mania and hypomania
The severity of symptoms e.g significant impairment of function, hospitalisation etc.
What is Bipolar Disorder
A disorder characterised by two or more episodes in which patients mood/activity levels are significantly disturbed consisting of episodes of mania/hypomania +/- depression
What is Bipolar 1
Manic episodes WITH OR WITHOUT major depressive episodes
What is Bipolar 2
Hypomanic episodes AND major depressive episodes
What is Cyclothymia
- Cyclical moods of hypomania and depression but not severe enough to meet diagnosis of bipolar
- Symptoms have to last at least 2 years, present at least half the time and never absent for longer than 2 months
What is rapid cycling
Patients have 4 or more episodes of depression, mania or hypomania in one year
What could be a differential for bipolar
Substance/Medication induced bipolar/mania
- occurs during/shortly after intoxication/ withdrawal
- Alcohol
- Steroids
- Illicit Substances e.g amphetamines, cocaine
- Antidepressants
What Ix should be done for bipolar
Clinical Diagnosis ALWAYS assess suicide risk Screen for drugs and toxins e.g urine Infections Past Fx - strong genetic component CT
How should acute mania be managed
Any SG Antipsychotics - rapid onset of action for agitated patients
After successful management of a manic/depressive episode what needs to be given for long term maintenance of bipolar
A Mood Stabiliser
- Lithium
- Sodium Valproate (SE: hair)
- Lamotrigine (SE: rash/SJS)
- Carbamazepine (SE :rash/neutropenia)
- 2nd Line: Olanzapine
Psycho: Talking therapy
Social: Family or carer support/employment/ activity support/education
Why does lithium blood concentration have to be checked regularly
It has a narrow therapeutic index (small changes in dose/blood concentration can have severe effects)
- Elderly show increased sensitivity to lithium
What adverse effects can lithium cause
Lithium toxicity from impaired renal function/nephrotoxicity from lithium
- Loss of vision
- D&V
- Ataxia
- Tremor
- Dysarthria
- Coma
How can severe depressive episodes be managed in Bipolar
Antidepressants should not be given before initiating therapy with mood stabilisers and it may lead to a manic episode
(Antidepressants may be given after initiating mood stabilising therapy)
What are causes of anxiety
Genetic Predisposition Disruption of Serotonin System Substance Use Stress (work, home) Events (divorce, job loss, moving) Smoking Psychological Trauma e.g child abuse Medical conditions e.g CVS, hyperthyroidism, respiratory illness
How can anxiety present
Cognitive: Agitation, feeling of doom, poor concentration, insomnia, fatigue, obsessions, compulsions, worry, depression
Somatic: Tension, trembling, sense of collapse, hyperventilation, headache, butterflies, sweating, palpitations, nausea
Behaviours: Reassurance seeking, avoidance, dependence on person
What is generalised anxiety disorder
Prolonged and excessive anxiety which is generalised and not focused on a single specific fear for at least 6 months
What are non medical treatments for anxiety
- Symptom control: understanding somatic symptoms are not life threatening
- Regular Exercise
- Meditation - Mindfullness
- Progressive Relaxation Training e.g deep breathing and relaxation of muscle groups
- CBT
- Behavioral Therapy - exposure and response therapy
- Hypnosis
What are the medical treatments for anxiety
- 1st line: SSRIs + CBT (gold standard)
- 2nd line: Pregablin
- Benzodiazapines for short term management until SSRIs become effective (DO NOT USE IN GENERALISED ANXIETY DISORDER PEOPLE BECOME DEPENDENT ONLY SHORT TERM)
- Beta Blockers can help somatic symptoms
What is panic disorder
1) Recurrent and unexpected panic attacks that occur without known trigger
2) Persistent worry/change in behaviour due to fear of recurrent attacks for at least a month
3) Not effects of substance
4) Not another Disorder
What is panic disorder often associated with
Agoraphobia (can’t predict attacks which leads to avoidance)
How does Panic Disorder present
STUDENTS FEAR the 3Cs
Sweating Trembling Unsteadiness Derealisation Elevated HR Nausea Tingling SOB
FEAR of dying, losing control, going crazy
Chest pain
Choking
Chills
How is Panic Disorder managed
CBT
SSRIs
Benzodiazepines - for managing acute attacks
What are phobic disorders
Anxiety experienced only or predominantly in certain well defined situations that aren’t dangerous - resulting in situation being avoided or endured with dread
What are examples of Phobias
Agoraphobia
Social Anxiety Disorder/ Phobia
Simple Phobia
What is Agoraphobia
Pronounced fear of being in situations that are perceived difficult to escape from or difficult to seek help
e.g crowds, travel, events away from home, open spaces, enclosed spaces for at least 6 months
What is social anxiety disorder/phobia
Pronounced anxiety for 6 months or longer of social situations that may involve scrutiny from others (don’t want to be embarrassed or judged)
Can be SAD (meeting new people, eating in front of people) or Performance only SAD (public speaking)
What are simple/specific phobias
Intense and persistent fears of one or more situations or objects when encountered or anticipation for encounter e.g arachnophobia, claustrophobia, haematophobia
How may phobias present
Catastphohic thoughts
Panic Attacks
Avoidance
How are phobias treated
Psychologial Therapy - exposure and response prevention
SSRIs
Beta Blockers and Benzodiazepines in acute situations
How can a new diagnosis of a psychiatric illness affect driving
DVLA need informing of a diagnosis of a psychiatric disorder and medication you are on
What SE can MAOIs cause
Hypertensive Crisis - Cheese and Red Wine
What is OCD
Characterised by:
- Persistent and Recurrent Intrusive thoughts, urges and images which cause anxiety/distress (obsessions)
- Leading to repetitive behaviours/rituals to reduce the distress/anxiety of an obsession (compulsion)
- These are time-consuming and significantly impair function/daily life
What is OCD caused and associated with
Unknown Genetic + Environment
Associations:
- Tic Disorder
- Personality Disorder
- Mood Disorder
What are some examples of rituals
Cleaning
Dressing
Counting
Checking
What is the treatment for OCD
Psychotherapy: Exposure & Response Prevention Therapy
Medication: SSRI e.g Fluoxetine TCA e.g Clomipramine
Social: Family Intervention, Support with Engagement, Employment, Education, Involvement in Activities, Carer Support
What is an acute stress reaction
A transient condition (hours to days) in reaction to a traumatic event resulting in dissociation and mixed emotions of anger, anxiety and confusion which impairs function
It usually resolves with psyhological intervention e.g talking to friends and family
What is an adjustment disorder
A maladaptive behaviour or emotional response to a stressor resulting in impaired function that lasts under 6 months when the stressor is removed e.g cancer diagnosis, divorce
What is PTSD
A reaction to a traumatic event which significantly impairs function lasting longer than a month
What are the symptoms of PTSD
Intrusions e.g Intrusive thoughts of event, Flashbacks, Nightmares
Avoidance e.g avoidance of thoughts, feelings, external stimuli associated with event
Negative affected mood or cognition e.g guilt, fear and depression, memory loss/distortion, negative beliefs, detachment
Arousal or Reactivity e.g Hyperarousal, Hyper-vigilance, easily startled, sleep disturbance
What are the comorbid conditions associated with PTSD
Depression
Emotional Numbness
Drug/Alcohol Abuse
Anger/Violence
What can cause PTSD
Sexual Abuse - main cause War Combat Exposure Natural Disasters Accidents
What is the treatment for PTSD
Psychotherapy: CBT and Eye Movement Desensitisation And Reprocessing (EMDR)
Medications: SSRIs or SNRI
SGA if presenting with psychotic symptoms
Benzo can be used short term but REMEMBER addiction and dependence
What is Derealisation
Feeling of detachment from Surroundings
What is Depersonalisation
Feeling of detachment from ones body, thoughts and feelings (sometimes described as observing yourself from outside your body like a movie)
What can depersonalisation and derealisation lead to
Altered sense of time
Emotionally/Physically numb
Weak sense of self
Trouble recognising people, places and objects
What is Dissociative Amnesia
A person is unable to recall periods of their life or events that happened in the past , they may also have forgotten a learned skill or talent
What is a symptom of dissociative amnesia
Inability to recall ones past with loss of identity/formation of a new identity with unexpected purposeful travel to a new location and act as a different person in different life (can last hours to months)
What can cause dissociation
Childhood Truama
Trauma
Substance Misuse
Anxiety Disorder
What is the treatment for dissociation
Psychotherapy: CBT
What criteria is used to diagnose Schizophrenia
Schneider
What are the 1st rank symptoms of Schizophrenia
- Thought Disorder e.g. insertion, withdrawal, broadcast
- 3rd Person Auditory Hallucinations in the form of Running Commentary or talking about them amongst themselves (thought echo)
- Delusional Perception
- Passivity
What are 2nd rank symptoms of Schizophrenia
- Persistent hallucinations in any modality (somatic, visual, tactile)
- Second person auditory hallucinations
- Paranoid and Persecutory Delusions
- Delusions of Reference
What are positive symptoms of Psychosis
Hallucinations
Delusions
Illusions
Disorganised Thoughts and Speech Process e.g loosening of associations, word salad, neologisms, flight of ideas, circumstantial speech, tangential speech, pressured speech
What are negative symptoms of Psychosis
Blunted/Flat Effect Apathy Alogia/Poverty of Speech Anhedonia Emotional and Social Withdrawal Self Neglect Catatonia/ Psychomotor Retardation
What are cognitive symptoms of Psychosis
Impaired Memory
Inattention
poor executive functioning
What are differentials for Psychosis
- Schizophrenia - recurrent/chronic disorder
- Affective Psychosis - e.g depression/bipolar
- Transient Psychotic Disorders e.g triggered by stress
- Drug Induced by Psychosis
- Schizoaffective Disorder
- Schizophreniform Disorder
- Delusional Disorder
- Psychosis due to medical condition e.g brain tumour or head injury
- Personality Disorders
- Dementia
What is the diagnosis for Schizophrenia
Psychotic Symptoms lasting at least 6 months and are present much of the time
(all other possible cases of psychosis need to be ruled out)
How is Schizophrenia managed
Psycho: CBT, Abstinence from drugs
Medication: Antipsychotics
Social: Family intervention, social support (housing, benefits, employment, education) support with engagement, carer support
Who are Psychosis patents referred to following the acute phase
The Early Intervention Team
What is Schizoaffective Disorder
Features of Schizophrenia and a major mood disorder (depression/bipolar) present at the same time without being caused by any other medical disorder or substance misuse (psychosis is the predominant feature)
(Neither a variant of schizophrenia or mood disorder!!!!)
What is the treatment for Schizoaffective Disorder
Manage Both Conditions:
- Antipsychotic
- Mood Stabiliser
What is Schizotypical disorder and how is it managed
A personality disorder characterised by odd and eccentric behaviour and magical thinking, may present a partial expression to schizophrenia
Management: Treated without Medication
What is Schizophreniform and how is it managed
Given to disorders that don’t reach the. threshold for Schizophrenia but have some symptoms of it and deterioration of function
Management: Antipsychotics
What do antipsychotics do
Dopamine Antagonists - Block the D2 receptor
Reducing Dopamine Neurotransmission
What are the two broad groups of Antipsychotics
First Generation Antipsychotics - D2 Antagonists
Second Generation Antipsychotics/ Atypical Antipsychotics - D2 & 5HT2A Antagonists
What are some examples of second generation antipsychotics
Clozapine
Olanzapine
Risperidone
Quetiapine
What are some examples of first generation antipsychotics
Haloperidol
Promethazine
Chlorpromazine
What is the difference between first and second generation Antipsychotics
The SE:
- FGA - are associated with higher risk of EPS
- SGA - are associated with a lower risk of EPS but with higher risk of metabolic side effects
What are Extrapyramidal SE
Drug induced movement disorders caused by disruption of dopaminergic pathways
Symptoms:
- Acute Dystonia - continuous painful muscle spasms and contractions
- Parkinsonism - Rigidity, Tremor, bradykinesia and shuffling gait
- Akathisia - Restlessness
- Tardive Dyskinesia - involuntary movements generally of the tongue, mouth and jaw e.g repetitive lip smacking and chewing
How can you manage EPSE
Try to reach lowest tolerate dose
- Acute Dystonia: Anticholinergics (Procyclidine/Benztropine) or Antihistamines (Cyproheptadine)
- Parkinsonism: Dose reduction, switch to SGA, Anticholinergic (Procyclidine/Benztropine)
- Akathisia: Dose reduction, switch, Propranolol +/- Anticholinergic (Benztropine)
Tardive Dyskinesia - May be irreversible
What are metabolic SE
Weight Gain
Hyperglycaemia/Insulin Resistance - Diabetes
Dyslipidaemia
What are other SE of Antipsychotics
- Hyperprolactaemia
- Prolonged QT
- Sexual Dysfunction - erectile dysfunction, reduced libido, reduced arousal
- CV effects - Olanazapine & Rispiridone can increase risk of stroke in elderly when used to treat dementia!!!, Myocarditis and Cardiomyopathy
Daytime Drowsiness
What is a life threatening emergency associated with antipsychotics
Neuroleptic Malignant Syndrome
How does Neuroleptic Malignant Syndrome present
Fever
Muscle Rigidity
Autonomic Instability
Delirium/Mental State Change
What will be seen on Investigations of Neuroleptic Malignant Syndrome
Markedly Raised Creatine Kinase
Leukocytes
What is the management of Neuroleptic Malignant Syndrome
Stop Antipsychotic!!!!
Supportive measures - Admit to ICU
Dantrolene - reduces fever/hyperthermia and muscle rigidity
What is Clozapine
Most popular drug for treatment resistant Schizophrenia (Wonder Drug)
What are Clozapine Risk
- Neutropenia and potentially fatal agranulocytosis
- Prolonged QT complex, Fatal Myocarditis and Cardiomyopathy
- Intestinal Obstruction (can be fatal)