What Is Insomnia?
In modern Hong Kong society, with its fast pace and heavy work pressure, insomnia has become a common struggle for many people. According to the World Health Organisation (WHO), about one-third of adults worldwide experience insomnia at some point in their lives. Local studies in Hong Kong show that around 10–15% of adults suffer from chronic insomnia. Insomnia is not simply “being unable to sleep”; it is a common but complex sleep disorder that, if left untreated, can have profound effects on both physical and mental health.
Definition of Insomnia
Insomnia Disorder refers to patients who, despite having adequate opportunity to sleep, still find it difficult to fall asleep, maintain sleep, or wake up too early in the morning, accompanied by impaired daytime functioning. Symptoms must persist for at least three months, occurring at least three times per week, to meet clinical diagnostic criteria.
Insomnia includes several forms:
- Difficulty falling asleep: taking more than 30 minutes to fall asleep.
- Difficulty maintaining sleep: waking frequently at night and struggling to fall back asleep.
- Early awakening: waking too early in the morning and unable to return to sleep.
- Poor sleep quality: feeling unrefreshed despite adequate sleep duration.
Symptoms of Insomnia
Insomnia affects not only the night but also daytime functioning. Common symptoms include:
- Psychological: anxiety, irritability, poor concentration, memory problems.
- Physical: headaches, gastrointestinal discomfort, muscle tension, palpitations.
- Functional impact: reduced work efficiency, impaired academic performance, strained relationships.
Chronic insomnia increases the risk of depression, anxiety disorders, cardiovascular disease, and diabetes.
Causes of Insomnia
Insomnia usually results from a combination of biological, psychological, and environmental factors.
1. Biological factors
- Imbalances in brain neurotransmitters (such as serotonin, melatonin).
- Age-related changes in sleep structure.
- Chronic medical conditions (thyroid disease, heart disease, chronic pain).
2. Psychological factors
- Anxiety, depression, or other psychiatric conditions.
- Personality traits such as perfectionism or excessive self-demand.
- Sleep-related anxiety (worrying about not sleeping, which worsens insomnia).
3. Environmental factors
- Long-term stress (work, family, finances).
- Poor lifestyle habits (excessive caffeine, alcohol, smoking).
Irregular schedules (shift work, jet lag).
Types of Insomnia
Clinically, insomnia can be classified as:
- Acute insomnia: triggered by stress or life events, lasting days to weeks.
- Chronic insomnia: lasting three months or more, often co-occurring with psychiatric or medical conditions.
- Primary insomnia: persistent insomnia without clear medical or psychiatric cause.
- Secondary insomnia: caused by other illnesses or medications.
Treatment of Insomnia
Insomnia is treatable, and outcomes are usually good. Common approaches include:
1. Psychological Therapy
- Cognitive Behavioural Therapy for Insomnia (CBT-I): the gold standard treatment, helping patients change negative thoughts and behaviours about sleep.
- Relaxation training: deep breathing, progressive muscle relaxation, meditation.
- Sleep hygiene education: establishing healthy sleep habits.
2. Medication
- Sedative-hypnotics: benzodiazepines or “Z-drugs” (Zolpidem, Zopiclone), suitable for short-term use.
- Antidepressants: some (e.g., Trazodone) can improve sleep.
- Melatonin: effective for some patients, especially those with irregular schedules.
Psychiatrist’s gentle reminder: Medication should always be supervised by a doctor to avoid long-term dependence. Psychological therapy and lifestyle changes are the foundation for lasting improvement.
3. Lifestyle Adjustments
- Regular exercise: yoga, swimming, brisk walking.
- Healthy diet: avoid excessive caffeine and alcohol.
- Consistent schedule: go to bed and wake up at the same time daily.
Sleep environment: quiet, dark, and cool bedroom.
Prevention and Self-Management
- Avoid long daytime naps.
- Restrict bed use to sleep only, not for work or TV.
- Establish bedtime rituals (reading, listening to soft music).
- Reduce electronic device use before bed (avoid blue light from phones/computers).
Insomnia and Comorbidities
Insomnia often co-exists with other psychiatric conditions:
- Anxiety disorders: anxiety prevents relaxation and sleep.
- Depression: insomnia is a core symptom of depression.
- Substance misuse: some patients rely on alcohol or drugs to sleep, which worsens insomnia.
When to Seek Help
If insomnia persists for two weeks or more and affects daily life, work, or relationships, professional evaluation by a psychiatrist or clinical psychologist is recommended. Early intervention shortens illness duration and reduces relapse risk.
Conclusion
Insomnia is not a “minor issue” but a common and treatable sleep disorder. Through professional psychological therapy, medication, and lifestyle adjustments, most patients can significantly improve sleep quality and regain peace and health. If you or someone close to you is struggling with insomnia, remember: seeking help is a courageous first step. Early treatment is the key to restoring both body and mind to health.
