Understanding Depression
Depression (major depressive disorder) is a common and serious medical illness that negatively affects how you feel, the way you think, and how you act. It is distinct from usual mood fluctuations and short-lived emotional responses to challenges in everyday life. When long-lasting and with moderate or severe intensity, depression may become a serious health condition, causing the affected person to suffer greatly and function poorly at work, at school, and in the family.
Medical disclaimer: This information is for education only. It follows general clinical consensus and is not a substitute for personal medical advice. Please consult a qualified psychiatrist for diagnosis and treatment.
Common symptoms
Symptoms vary in severity and presentation. Diagnosis is made only when they significantly affect daily life over time.
- Persistent sad, anxious, or "empty" mood
- Loss of interest or pleasure in hobbies and activities
- Decreased energy or fatigue
- Difficulty sleeping, early-morning awakening, or oversleeping
- Appetite and/or weight changes
- Difficulty concentrating, remembering, or making decisions
- Feelings of guilt, worthlessness, or helplessness
- Thoughts of death or suicide
Possible causes
Mental health conditions rarely have a single cause — they arise from a mix of biological, psychological and social factors.
- Biological differences: Changes in brain function and structure.
- Brain chemistry: Alterations in neurotransmitters (like serotonin, dopamine).
- Hormones: Changes in the body's balance of hormones may be involved.
- Genetics: Depression is more common in people whose blood relatives also have this condition.
Risk factors
Certain factors may increase the likelihood of developing this condition:
- Personal or family history of depression
- Major life changes, trauma, or significant stress
- Certain physical illnesses and medications
- Substance abuse (which can trigger or worsen depression)
How it is evaluated
A clinical evaluation typically involves a detailed interview about your symptoms, thoughts, feelings, and behavior patterns. A psychiatrist will also take your medical history and may suggest physical examinations to rule out other medical conditions (like thyroid issues) that can mimic depressive symptoms.
When to seek help
If you experience multiple symptoms for most of the day, nearly every day, for at least two weeks, you should seek a professional evaluation. If you are having thoughts of self-harm, please reach out for emergency help immediately.
Evidence-based treatments
Treatment is highly individualised. A combination of therapy, medication and lifestyle support is usually most effective.
Psychotherapy (Talk Therapy)
Cognitive Behavioral Therapy (CBT) helps identify and change negative thinking and behavior patterns. Interpersonal Therapy focuses on improving troubled personal relationships.
Medication
Antidepressants may be prescribed to help modify brain chemistry. These are highly individualized, and a psychiatrist will work with you to find the most effective medication with the fewest side effects.
Lifestyle Modifications
Improving sleep hygiene, increasing physical activity, and ensuring a balanced diet can play a supportive role in recovery, often used alongside other treatments.