classification of the psychiatric illness
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Classification of Classification of Psychiatric illnessPsychiatric illnessClassification of Classification of
Psychiatric illnessPsychiatric illness
Why do we need classification?• Diagnostic Criteria
– Syndromes– Operational definitions
• To share the knowledge about an illness (aetiology, course, prognosis, treatment options etc.)
• Epidemiological purposes• Health Information Systems• Planning services• Research purposes
International classification in
Psychiatry
•ICD (International Classification of diseases)
•DSM (Diagnostic and Statistical Manual of mental disorders)
Chapter V of ICD10• F0 – Organic, including symptomatic mental disorders• F1 – Mental and behavioral disorders due to psychoactive
substances• F2 – Schizophrenia, schizotypal and delusional disorders• F3 – Mood disorders• F4 – Neurotic, stress related and somatoform disorders• F5 – Behavioural pattern associated with psychological
disturbances and physical illness• F6 – Disorders of adult personality and behaviours• F7 – Mental retardation• F8 – Disorders of psychological development• F9 - Behavioral and emotional disorders with onset
during childhood and adolescence
Mental illness (Chap.V or F code)Mental illness (Chap.V or F code)
Acute
Organic (F0, F1)
Chronic
Functional Others(F5, F6, F7, F8,
F9)
Psychosis
(F2, F3)
Neurosis(F4) (Minor Mental Health Disorders)
Anxiety
Depression
Somatoform Disorders
OCD
PTSDSchizophrenia
Bipolar
Differentiation of major mental illness
Organic disorder• Clouding of consciousness• Disorientation • Memory disturbances• Known physical
pathology• Positive physical &
investigatory findings• Treat the underlying
condition/s
Functional disorder• Clear consciousness• Well oriented• No memory disturbance• No known organic
pathology
• Negative physical and investigatory findings
• Treat the psychiatric conditions
Organic disorders
Acute • Sudden onset• Short duration• Altered level of
consciousness• Good prognosis if
cause R, reversible• Prototype e.g.(Delirium,
Post ictal confusion)
Chronic• Insidious onset• Slow progression• Generally conscious• Memory disturbances• Poor Prognosis,
irreversible• Prototype
(e.g.Dementia)
Functional disorders
Psychosis• Major Mental illness• Incomprehensible• Endogenous • Usually needs admission• Needs medication• Poor insight• Rehabilitation and long
term care is needed in Scz• Eg: Schizophrenia, • Manic Depressive Disorder
Neurosis• Minor mental illness• Comprehensible• Exogenous • Could be managed outside• Psychotherapy, relaxation• Good insight• Temporary- remove stress,
some may need long term support
• Eg: Anxiety, Reactive Depression, somatization
Other Conditions
• Sexual problems• Child and adolescence problems• Personality disorders• Eating disorders• Sleep disorders• Mental Retardation
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