F05 Delirium not induced by alcohol or other psychotropas substances

Organic brain syndrome that lacks a specific etiology, characterized by the simultaneous presence of disorders of consciousness and attention, of perception, of thought, of memory, of psychomotility, of emotions and the sleep-vigilia cycle. It can occur at any age, but it is more frequent after 60 years. Delirium's picture is transitory and fluctuating intensity. Most cases recover in four weeks or less. However, it is not uncommon for the delirium persisting with fluctuations even for six months, especially when it has emerged in the course of a chronic liver disease, carcinoma or subaccotian bacterial endocarditis. The distinction that is sometimes made between the acute and subacute delirium does not have great clinical relevance and the disorder must be conceived as a unit syndrome whose intensity can go from mild to very serious. A delirium can overlap or evolve towards a dementia.

Content

• Diagnosis guidelines
• F05.0 delirium not superimposed on dementia
• F05.1 Delirium superimposed on dementia
• F05.8 Another delirium
• F05.9 Delirium without specification

Diagnosis guidelines

1. Deterioration of consciousness and attention (which covers a spectrum that goes from obnubilation to coma and a decrease in the ability to direct, focus, maintain or displace attention).
2. Global cognitive disorder (distortions of perception, hallucinations and illusions, especially visual, deterioration of abstract thinking and the ability to understand, with or without passing delusional ideas, but in a characteristic way with some degree of incoherence, deterioration of memory Immediate and recent, but 'with relatively intact remote memory, disorientation in time and, in most serious cases, in space and for people).
3. Psychomotor disorders (Hypro- or hyperactivity and unforeseen changes from one state to another, increased time of reaction, increase or decrease in speech flow, accentuation of surprise reactions).
4. Disorders in the Sleep-Vigilia cycle (insomnia or, in severe cases, total loss of sleep or investment of the vigil sleep cycle, daytime drowsiness, evening worsening of symptoms, unpleasant dreams or nightmares that can prolong during the Vigil in the form of hallucinations or illusions).
5. Emotional disorders, for example, depression, anxiety or fear, irritability, euphoria, apathy or perplexity.

The beginning of the picture is usually fast, in its course diurnal fluctuations of the symptoms and the total duration of the disorder must be submitted must be less than six months. The described clinical picture is so characteristic that a reliable Delirium diagnosis can be done even before confirming its etiology. If the diagnosis offers doubt, in addition to the history of a underlying somatic or brain disease, it may be necessary background activity).

Includes:
Acute-corebral syndrome.
Acute or subacute confusional state (non -alcoholic).
Acute or subacute infectious psychosis.
Acute or subacute organic reaction.
Acute psycho-organic syndrome.

F05.0 delirium not superimposed on dementia

Use this code for cases where delirium guidelines that are not overlapping previous dementia are satisfied.

F05.1 Delirium superimposed on dementia

Use this code for cases where the previous guidelines are satisfied, but that are developed in the course of a dementia (F00-F03).

F05.8 Another delirium

Includes:
Delirium of mixed origin.
Delirium or confusional subacute state.

F05.9 Delirium without specification