Depression is not diagnosed simply because someone feels sad. A proper diagnosis requires internationally recognized standards combined with a thorough clinical evaluation by a mental health professional.
Diagnostic Standards
In psychiatry, two major international systems are used:
- DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition)
Developed by the American Psychiatric Association, widely used in clinical practice and research worldwide. - ICD-11 (International Classification of Diseases, 11th Revision)
Developed by the World Health Organization (WHO), serving as the global standard for medical classification.
While there are slight differences between DSM-5 and ICD-11, the core principles are the same:
- Symptoms must last at least two weeks
- Symptoms must cause significant impairment in daily life, work, or social functioning
- Other medical conditions or substance effects must be ruled out
🩺 Clinical Diagnostic Process
1.Clinical Interview
A psychiatrist conducts a face-to-face interview to understand the type, duration, and severity of symptoms, as well as their impact on daily life. Topics often include:
- Emotional state (sadness, anxiety, irritability)
- Sleep and appetite changes
- Concentration and memory
- Feelings of guilt, hopelessness, or suicidal thoughts
- Stressful life events
- Family history of mental illness
This step is not only about gathering information but also about building trust between doctor and patient.
2.Mental Status Examination (MSE)
The psychiatrist observes appearance, behaviour, speech, mood, thought content, and logic. They also assess insight and judgment. For example:
- Does mood match the conversation?
- Is thinking coherent?
- Are there delusions or hallucinations?
- How is attention and reaction speed?
3.Psychometric Scales
Standardized questionnaires help measure severity and track treatment progress:
- PHQ-9 (Patient Health Questionnaire-9)
- Commonly used for initial screening and monitoring
- Covers mood, sleep, appetite, concentration
- Higher scores = more severe symptoms
- HAM-D (Hamilton Depression Rating Scale)
- Evaluates severity and treatment response
- Includes emotional, physical, and functional symptoms
- BDI-II (Beck Depression Inventory-II)
- Self-report questionnaire
- Reflects the patient’s subjective experience
- Helps understand personal perception of symptoms
Why Is Professional Diagnosis Important?
Many people try online “depression self-tests.” While these can provide a preliminary reference, they cannot replace professional evaluation. Reasons include:
- Self-tests cannot rule out medical conditions (e.g., thyroid disease, anemia) that mimic depression
- They cannot fully assess the impact on daily functioning
- They lack professional observation and clinical judgment
The Value of Professional Diagnosis
- Accuracy: Combines clinical expertise with standardized tools
- Comprehensiveness: Considers biological, psychological, and social factors
- Safety: Identifies suicide risk early and provides timely intervention
Depression diagnosis is a structured, evidence-based process. If you or someone you know has persistent symptoms, seeking a professional evaluation is the safest and most effective way leading to recovery.
