Psycho-organic (encephalopathic) syndrome
The concept of "psycho-organic syndrome" encompasses all typical manifestations of mental disorders of organic origin. Its symptomatology is extremely diverse and may include manifestations of neuroses and functional psychoses.
When making a diagnosis, primary attention is paid to impairments in memory, emotions, and comprehension. The main criterion is the Bumke-Walter diagnostic triad (1951):
- Impaired recall (up to fixation amnesia).
- Impaired comprehension (up to dementia).
- Emotional lability (e.g., dysphoria or emotional incontinence).
Against the background of these disorders, drastic personality changes occur. Patients become egocentric, and their interests become mundane. Slowness is characteristic, periodically replaced by sudden explosiveness, while passivity and indifference are observed less frequently. According to E. Bleuler, such patients are typically characterized by cognitive torpidity combined with anger, emotional lability, reduced insight, and pettiness.
Clinical Manifestations and Localization
The symptomatology of organic brain diseases includes three main groups of disorders:
- Focal neurological symptoms: paralysis, epileptiform paroxysms, coordination and sensory disorders. This also includes higher bulbar and cortical disorders (apraxia, aphasia, acalculia, agraphia, dysarthria, dysphagia).
- Asthenic syndrome: hyperesthesia and rapid fatigability. (Asthenia—a combination of fatigability and irritability—is especially characteristic of vascular, infectious, and traumatic lesions).
- Somatovegetative disorders: headaches, autonomic regulation disorders (dyspnea, tachycardia, hyperhidrosis), and weather sensitivity (poor tolerance of stuffiness, heat, and weather changes) are very characteristic.
The spectrum of manifestations directly depends on the severity of the pathology. In mild cases, only asthenia and accentuation of premorbid personality traits are observed. In severe cases, Korsakoff's syndrome, total dementia, or marasmus develops.
Localization plays a significant role. When the frontal lobes and brainstem are affected, passivity, adynamia, and indifference dominate. In some cases, euphoria, rudeness, complacency, and moria (pathological jocularity) occur.
Main nosological forms
Various organic diseases differ in their course and outcome:
- Epilepsy: occurs spontaneously or is provoked by an organic lesion. The course is chronic, progressive, and autochthonous. It manifests with paroxysms and personality changes (egocentricity, unctuousness, pedantry). The outcome is concentric dementia.
- Oligophrenia: the disorder lasts a lifetime, and a progressive course is not characteristic. It manifests as general underdevelopment with intellectual deficit. The condition is stable.
- Cerebrovascular atherosclerosis: spontaneously occurs in older age. It is characterized by a remitting-progressive course with severe weather sensitivity, asthenia, and memory impairment (but insight is preserved). The outcome is lacunar dementia.
- Head trauma: manifests immediately after the injury. The course is regressive. The outcome is a persistent psycho-organic syndrome.
- Intracranial tumors: protracted, steadily progressive course with focal deficit and dementia. The outcome is death.
- Alzheimer's disease: spontaneous development in middle/older age. The course is autochthonous, progressive. It leads to severe dementia (disintegration of memory, praxis, insight) and death.
- General paresis: occurs 10–15 years after syphilis infection. The course is progressive, leading to dementia and death.
Diagnostic Principles
In psychiatry, the term "organic" is interpreted more broadly than in neurology. For example, intoxication may not produce visible structural changes on scans, and a neurologist might consider it a functional disorder. For a psychiatrist, however, this is a global process leading to irreversible loss of memory and thinking, and therefore—organic.
To verify the diagnosis and topical localization, a comprehensive examination is necessary:
- Neurological examination and ophthalmoscopy of the fundus.
- Neuroimaging (CT, MRI, skull radiography).
- Assessment of functional activity (EEG, REG, cerebral vessel Doppler ultrasound).
- Cerebrospinal fluid (CSF) analysis and serological tests (for HIV, syphilis, tuberculosis).
- Neuropsychological testing to assess lost higher functions.
Briefly: answers to topical questions
What stages of dementia are distinguished in the clinical picture of Alzheimer's disease?
The clinical picture of Alzheimer's disease includes the initial period, early and late stages, as well as the outcome of the disease.
- Initial period — characterized by unstable persecutory delusions and brief episodes of altered consciousness.
- Early stages — the core of the personality and formal insight are preserved, but apraxia develops very quickly.
- Late stages — focal neurological symptoms join in (oral and grasping automatisms, paresis, increased muscle tone, epileptiform seizures).
- Outcome — severe impairment of mental and physiological functions leading to marasmus.
What specific cerebrospinal fluid changes are detected in general paresis?
In general paresis, CSF changes involve cell counts and protein fractions while maintaining transparency and normal pressure.
- Pleocytosis — an increase in cell count (in the described clinical case, it is 55 cells per 1 µL).
- Protein changes — imbalance of fractions (globulin/albumin ratio is −1.0).
- Lange's colloidal gold curve — a specific paretic curve is detected.
What types of epileptic paroxysms are most characteristic of symptomatic epilepsy in organic lesions?
Focal (partial) and secondary generalized seizures are most characteristic of symptomatic epilepsy in organic brain lesions.
- Simple focal seizures — occur without impairment of consciousness and include motor, sensory, and autonomic attacks.
- Complex focal seizures — are accompanied by impairment or alteration of consciousness.
- Secondary generalized seizures (grand mal) — begin with focal symptoms followed by generalization.
Clinical variants of such paroxysms include Jacksonian and psychosensory seizures, as well as attacks with ambulatory automatisms.
For quick memorization of the basics of psycho-organic syndrome (the Bumke-Walter triad), use the rule of the "Three P's": Memory (impaired recall) — Perception/Comprehension (intellectual decline) — Passions/Emotions (emotional incontinence).
Class and exam questions
Can an organic disorder be completely ruled out if MRI and EEG show no pathology?
No. An important rule applies in psychiatry: the absence of paraclinical signs does not rule out a diagnosis. The loss of higher mental functions makes it possible to diagnose a condition before the defect is visible on scans.
How to differentiate emotional lability in organic pathology from hysterical psychopathy?
In organic brain damage, any personality changes and emotional lability always occur against the background of a persistent memory and intellect deficit.
What are the clinical differences between cerebrovascular atherosclerosis and Alzheimer's disease?
In atherosclerosis, the course is undulating, weather sensitivity is pronounced, and in case of memory impairment, insight into one's condition is preserved (lacunar dementia). Alzheimer's disease progresses steadily and leads to total dementia with complete loss of insight.
What else to study on this topic
- Pathogenesis of exogenous-type reactions in tumors and traumas
- Formation of concentric dementia in epilepsy
- Neuropsychological testing: methods of topical diagnosis
- Mechanisms of Korsakoff's syndrome development in severe organic lesions
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