Table of Contents

HOW TO TREAT OTHER MENTAL DISORDERS DUE TO BRAIN DAMAGE, DYSFUNCTION, OR PHYSICAL DISEASE 2025
GUIDELINES FOR THE DIAGNOSIS AND TREATMENT OF COMMON MENTAL DISORDERS
(Enacted under Decision No. 2058/QĐ-BYT dated May 14, 2020, by the Minister of Health)
Article 5
OTHER MENTAL DISORDERS DUE TO BRAIN DAMAGE, DYSFUNCTION, OR PHYSICAL DISEASE
CHIEF EDITOR
Associate Professor, PhD Nguyễn Trường Sơn
CO-EDITOR
Associate Professor, PhD Lương Ngọc Khuê
PhD Nguyễn Doãn Phương
CONTRIBUTING AUTHORS
PhD Trần Thị Hà An
MSc Trịnh Thị Vân Anh
PhD Vũ Thy Cầm
MSc Trần Mạnh Cường
PhD Nguyễn Văn Dũng
PhD Vương Ánh Dương
PhD Lê Thị Thu Hà
MSc Trần Thị Thu Hà
MSc Phạm Công Huân
MSc Đoàn Thị Huệ
Specialist Doctor II Nguyễn Thị Minh Hương
MSc Vũ Thị Lan
- Nguyễn Phương Linh
Specialist Doctor II Nguyễn Thị Phương Loan
MSc Bùi Văn Lợi
MSc Nguyễn Thị Phương Mai
PhD Trần Nguyễn Ngọc
MSc Bùi Nguyễn Hồng Bảo Ngọc
MSc Trương Lê Vân Ngọc
MSc Bùi Văn San
PhD Dương Minh Tâm
MSc Phạm Xuân Thắng
MSc Lê Thị Phương Thảo
MSc Lê Công Thiện
MSc Vương Đình Thủy
Associate Professor, PhD Nguyễn Văn Tuấn
Specialist Doctor II Ngô Văn Tuất
MSc Đặng Thanh Tùng
MSc Vũ Sơn Tùng
MSc Cao Thị Ánh Tuyết
MSc Nguyễn Thị Ái Vân
Specialist Doctor II Hồ Thu Yến
MSc Nguyễn Hoàng Yến
CONTRIBUTORS TO EVALUATION AND FEEDBACK
Associate Professor, PhD Nguyễn Thanh Bình
PhD Vũ Thy Cầm
PhD Nguyễn Hữu Chiến
Specialist Doctor II Võ Thành Đông
PhD Lê Thị Thu Hà
Specialist Doctor II Đỗ Huy Hùng
PhD Nguyễn Mạnh Hùng
MSc Nguyễn Trọng Khoa
Specialist Doctor II Ngô Hùng Lâm
Associate Professor, PhD Phạm Văn Mạnh
Specialist Doctor II Trần Ngọc Nhân
PhD Dương Minh Tâm
MSc Đặng Duy Thanh
PhD Vương Văn Tịnh
Specialist Doctor II Lâm Tứ Trung
PhD Lại Đức Trường
PhD Cao Văn Tuân
Associate Professor, PhD Nguyễn Văn Tuấn
SECRETARIAT TEAM
MSc Đặng Thanh Tùng
MSc Trương Lê Vân Ngọc
BA Đỗ Thị Thư
Article 5
OTHER MENTAL DISORDERS DUE TO BRAIN DAMAGE, DYSFUNCTION, OR PHYSICAL DISEASE
I. DEFINITION
Organic mental disorders refer to psychiatric conditions directly associated with brain damage or dysfunction, resulting from primary brain diseases (e.g., brain tumors, encephalitis, neurodegeneration) or systemic conditions (e.g., medical illnesses, endocrine disorders, infections, intoxications, metabolic disturbances) that impair brain function. These disorders highlight the interplay between physical health and mental status, spanning multiple clinical specialties. In the International Classification of Diseases, 10th Revision (ICD-10), organic mental disorders are categorized under codes F00–F09. Specifically, “other organic mental disorders” fall under F06, encompassing syndromes involving perception (hallucinations), thought (delusions), emotion (depression, mania, anxiety), and cognition.
II. ETIOLOGY
- Brain-Related Causes
– Brain tumors;
– Abscesses, meningitis, encephalitis, HIV, syphilis;
– Traumatic brain injury;
– Parkinson’s disease, Huntington’s disease;
– Cerebrovascular events: intracerebral hemorrhage, subarachnoid hemorrhage, cerebral infarction.
- Systemic Conditions Affecting Brain Function
– Infections: sepsis, urinary tract infections, pneumonia;
– Anemia, electrolyte imbalances, renal or hepatic failure, hypoglycemia, hyperglycemia, post-surgical states;
– Endocrine disorders: thyroid dysfunction, glucocorticoid excess (e.g., overuse);
– Nutritional deficiencies: vitamin B12 deficiency, folate deficiency.
III. DIAGNOSIS
- Clinical Features
The clinical presentation of these disorders may resemble or be identical to those of primary psychiatric conditions, but they are underpinned by organic causes, with psychiatric symptoms closely tied to physical pathology. Diagnosis is based on the following criteria (F06):
– Evidence of brain disease, damage, or dysfunction, or a systemic physical illness associated with one of the listed syndromes;
– A temporal relationship (within weeks to a few months) between the onset of the underlying condition and the emergence of the psychiatric syndrome;
– Recovery or improvement of the psychiatric disorder corresponding to resolution or amelioration of the underlying cause;
– Absence of evidence suggesting an alternative etiology for the psychiatric syndrome (e.g., strong family history or precipitating psychosocial stressors).
- Ancillary Testing
The following tests may be ordered based on individual case presentation:
– Blood Tests: Complete blood count (CBC), comprehensive metabolic panel (electrolytes, renal and liver function, thyroid function, glucose, D-dimer, ACTH stimulation test);
– Arterial Blood Gas: To assess hypoxemia, hypercapnia, lactate levels;
– Urinalysis;
– Functional Studies: Electrocardiogram (ECG), electroencephalogram (EEG), cerebral blood flow studies, transcranial Doppler ultrasound;
– Imaging Studies: Brain CT, MRI, abdominal ultrasound, chest/abdominal X-ray;
– Toxicology Screen: Blood levels of digoxin, lithium, quinidine, alcohol, illicit drugs;
– Cerebrospinal Fluid (CSF) Analysis: To detect encephalitis or meningitis;
– Infectious Disease Testing: Syphilis serology, HIV antibody testing;
– Additional tests as clinically indicated.
Diagnosis must meet the general criteria for organic mental disorders (F06). Specific subtypes include:
1) Organic Hallucinosis (F06.0)
Persistent or recurrent hallucinations, typically auditory or visual, occurring in clear consciousness, with or without patient insight. Delusions may arise secondary to hallucinations.
– Meets F06 criteria, plus: no clouding of consciousness, no significant intellectual impairment, no predominant mood disturbance, and no dominant delusions.
2) Organic Catatonic Disorder (F06.1)
A state of reduced (stupor) or increased (agitation) psychomotor activity with catatonic features; these states may alternate.
– Meets F06 criteria, plus:
+ Stupor (reduced or absent spontaneous movement, partial or complete mutism, negativism, rigid posturing);
+ Agitation (marked hyperactivity, with or without aggressive tendencies);
+ Both (rapid, unpredictable shifts between hypo- and hyperactivity).
– Features like stereotypy, waxy flexibility, and impulsivity enhance diagnostic reliability.
3) Organic Delusional (Schizophrenia-Like) Disorder (F06.2)
A disorder dominated by persistent or recurrent delusions.
– Meets F06 criteria, plus: presence of delusions (persecutory, somatic, jealous, hypochondriacal, or beliefs of self/others’ death).
– Includes organic paranoid states, paranoid hallucinosis, and schizophrenia-like psychosis in epilepsy.
4) Organic Mood (Affective) Disorders (F06.3)
Disorders characterized by mood or emotional changes, often with altered overall activity levels, following an organic etiology. These must not represent an emotional reaction to awareness of illness or coincidental brain disease symptoms.
– Examples: Post-infectious depression (e.g., post-influenza) is coded here. Mild, prolonged euphoria not reaching hypomania (e.g., from steroids or antidepressants) is coded under F06.8, not here.
– Meets F06 criteria, plus: meets diagnostic requirements for a mood disorder (F30–F33).
– Subtypes (fifth-digit specifiers):
+ F06.30: Organic manic disorder;
+ F06.31: Organic bipolar disorder;
+ F06.32: Organic depressive disorder;
+ F06.33: Organic mixed affective disorder.
5) Other Organic Disorders
– Organic Anxiety Disorder (F06.4): Features of generalized anxiety disorder (F41.1), panic disorder (F41.0), or both, resulting from an organic condition (e.g., temporal lobe epilepsy, thyrotoxicosis, pheochromocytoma).
– Organic Dissociative Disorder (F06.5): Meets criteria for a dissociative disorder (F44) and F06 organic etiology.
– Organic Emotionally Labile (Asthenic) Disorder (F06.6): Marked, persistent emotional instability or lability, fatigue, and somatic complaints (e.g., dizziness, pain) attributed to organic pathology, often linked to cerebrovascular disease or hypertension.
– Mild Cognitive Disorder (F06.7): Characterized by impaired cognitive performance (memory, learning, concentration) with abnormal objective testing, but not meeting criteria for dementia (F00–F03), organic amnesia (F04), or delirium (F05).
– Other Specified Organic Mental Disorders (F06.8): E.g., abnormal mood states during steroid or antidepressant treatment.
– Unspecified Organic Mental Disorder (F06.9): Non-specific cases due to brain damage, dysfunction, or physical disease.
IV. TREATMENT
- Treatment Principles
– Primary focus is treating the underlying cause (brain-related or systemic conditions affecting the brain).
– Combine etiological treatment with symptom management, emphasizing supportive care, nutrition, physical conditioning, and immune support to promote recovery.
- Treatment Framework
– Pharmacotherapy;
– Psychotherapy;
– Supportive care.
- Specific Treatments
3.1. Pharmacotherapy
3.1.1. Cognitive Symptom Management
Options include:
– Donepezil: 5-23 mg/day;
– Rivastigmine: 1.5-12 mg/day (oral or transdermal);
– Galantamine: 8-24 mg/day.
Agents studied for cognitive impairment (neurotrophic, metabolic, or cerebral circulation enhancers):
– Cerebrolysin: 10-20 mL/day;
– Ginkgo biloba: 80-120 mg/day;
– Piracetam: 400-1200 mg/day;
– Citicoline: 100-1000 mg/day;
– Choline alfoscerate: 200-800 mg/day;
– Vinpocetine: 5-100 mg/day.
For associated symptoms (delusions, hallucinations, depression, agitation): use antipsychotics, antidepressants, or anxiolytics as needed.
3.1.2. Treatment of Hallucinations and Delusions
Options (1-3 agents):
– Risperidone: 1-10 mg/day;
– Quetiapine: 50-800 mg/day;
– Olanzapine: 5-30 mg/day;
– Clozapine: 25-300 mg/day;
– Aripiprazole: 10-30 mg/day;
– Haloperidol: 0.5-20 mg/day.
3.1.3. Treatment of Depression and Anxiety
Options (1-3 agents):
– Amitriptyline: 25-150 mg/day;
– Sertraline: 50-200 mg/day;
– Citalopram: 10-40 mg/day;
– Escitalopram: 10-20 mg/day;
– Fluvoxamine: 100-200 mg/day;
– Paroxetine: 20-50 mg/day;
– Fluoxetine: 10-60 mg/day;
– Venlafaxine: 75-375 mg/day;
– Mirtazapine: 15-60 mg/day.
3.1.4. Mood Stabilizers
Options:
– Valproate: 200-2500 mg/day;
– Divalproex: 750 mg/day to 60 mg/kg/day;
– Carbamazepine: 100-1600 mg/day;
– Oxcarbazepine: 300-2400 mg/day;
– Lamotrigine: 100-300 mg/day;
– Levetiracetam: 500-1500 mg/day.
3.1.5. Anxiolytics
Combine with anxiolytics as needed:
– Diazepam: 5-20 mg/day;
– Bromazepam: 2-6 mg/day;
– Zopiclone, zolpidem, zaleplon.
For severe depression: Combine antidepressants with antipsychotics.
Supportive Medications:
– Hepatic Support: Aminoleban, silymarin, boganic, branched-chain amino acids;
– Vitamins:
– Vitamin B1 (high-dose): 500-1000 mg;
– Vitamin B12: 500-1000 mg;
– Vitamin C: 500-1000 mg;
– Vitamin PP (niacin): 300 mg;
– Nutritional support: vitamins, minerals, balanced diet, IV nutrition as needed.
3.2. Psychotherapy
– Direct: Family therapy, individual psychotherapy;
– Indirect:
– Ensure a safe environment for the patient and others;
– Maintain a quiet setting, minimizing external stimuli;
– Promote sleep hygiene;
– Educate families on caregiving and nutrition.
3.3. Physical and Occupational Therapy
– Collaborate with rehabilitation specialists;
– Goals: Restore motor function, provide speech therapy for language recovery.
V. PROGNOSIS AND COMPLICATIONS
- Prognosis
– Symptoms persist until the underlying cause is addressed; resolution of organic pathology may lead to amelioration or resolution of psychiatric symptoms.
– Prognosis worsens with multiple comorbidities or severe brain/systemic disease.
- Complications
– Related to the underlying condition;
– Infections and trauma require monitoring and management;
– Prolonged illness may lead to personality and behavioral changes;
– Persistent physical stressors may result in secondary depression or anxiety, even after stabilization of the underlying condition.
VI. PREVENTION
– As organic mental disorders primarily stem from brain or systemic diseases, prevention involves enhancing overall health through exercise, proper nutrition, and a balanced lifestyle.
– Early detection and treatment of physical illnesses and prompt management of psychiatric symptoms at specialized facilities are key.
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