Insomnia: Why You Cannot Sleep and What Actually Helps

If you are lying awake at 2am in Bangkok staring at the ceiling, you are not alone. I see this constantly, especially with expats who have just arrived, travellers dealing with jet lag, and long-term residents who cannot figure out why they stopped sleeping well. Sometimes there is an obvious reason. Often there is not, and that is the frustrating part.

Insomnia is not a character flaw, and it is not something you just push through. If it has been going on for more than a few weeks, it deserves proper attention. This article covers what is actually happening, what works, and when to stop Googling and see a doctor.

Acute vs Chronic Insomnia — Why the Difference Matters

Not all insomnia is the same, and the distinction changes what you should do about it.

Acute insomnia lasts days to a few weeks. It usually has a clear trigger: a long-haul flight, a stressful work situation, or landing in a new city. This type tends to resolve once the trigger passes. Most jet lag insomnia falls here.

Chronic insomnia is different. It means trouble sleeping at least three nights per week for three months or longer. At that point, it stops being a reaction to something and becomes its own problem. It needs proper clinical assessment, not just sleep hygiene tips from the internet.

There is also something I see frequently called psychophysiologic insomnia. You sleep fine on the sofa, fine in a hotel, but the moment you get into your own bed your brain switches on. The bed becomes linked with wakefulness, and that pattern keeps feeding itself. It is common and treatable, but it rarely fixes itself without structured help.

Why Bangkok Makes Sleep Harder Than Almost Anywhere

This matters more here than in most cities, and most expats underestimate it.

The ideal sleep temperature is around 18 to 20 degrees Celsius. Bangkok averages 28 to 35 degrees outside, and even with air conditioning, many apartments cycle between too warm and too cold through the night. Your body needs to lower its core temperature to reach deep sleep. When the environment fights that, your sleep suffers.

Noise is the other major factor. Bangkok does not quiet down. Traffic, tuk-tuks, street vendors, and construction all continue well past midnight. You may not consciously hear it after a while, but your brain does, and it keeps pulling you out of the deeper sleep your body needs most.

Then there is adjustment stress, which most expats underestimate. A new country, a new culture, a different time zone: all of this raises cortisol in the evening, exactly when it should be falling. That is why so many people here describe lying awake with their mind racing even when they feel physically exhausted. The causes of poor sleep in Bangkok are often environmental and situational, not just personal, and understanding that changes how we approach treatment.

What Insomnia Actually Does to Your Body

People often treat insomnia as an inconvenience. Left untreated, particularly when it is chronic, it has real consequences.

Sleep is when your brain clears metabolic waste, consolidates memory, and regulates hormone output. When that process is repeatedly disrupted, you see effects on concentration, mood, and immune function. Chronic insomnia is also linked to higher cardiovascular risk and impaired blood sugar regulation, based on data reviewed by the WHO and major sleep research bodies.

One thing many patients do not realise: waking up completely unrefreshed, even after eight hours in bed, is still a form of insomnia. It is called non-restorative sleep. Your sleep cycles have been disrupted even if the clock-hours look fine. This often shows up after prolonged stress, heavy alcohol use, or certain medications.

What Actually Helps — Evidence Ranked by Strength

CBT-I: The Treatment That Outperforms Pills

Cognitive behavioural therapy for insomnia, or CBT-I, is the first-line treatment recommended by international sleep guidelines. It consistently outperforms sleeping medication for long-term outcomes and does not carry dependency risk.

CBT-I works by changing the thoughts and habits that keep insomnia going. One part involves retraining your brain to link the bed with sleep rather than wakefulness. Another part involves temporarily reducing time in bed to strengthen your sleep drive. It also targets the anxiety loop that keeps your brain alert at bedtime.

Full CBT-I programmes require a trained therapist and are not widely available in Bangkok yet. A GP consultation is the practical starting point. A good doctor can assess what is driving your insomnia, walk you through the core principles, and decide whether a referral or further support is needed.

Sleep Hygiene — Useful, But Not Enough Alone

You have heard this before: consistent wake times, no screens before bed, a cool dark room, no caffeine after 2pm. These things help, but only as part of a broader approach. Sleep hygiene alone does not fix chronic insomnia. Patients who try to push through with hygiene tips alone often feel like they are failing when the problem continues.

Melatonin

Melatonin helps with circadian rhythm disruption, particularly jet lag. It is useful for resetting your body clock after a long flight. The evidence for using it as a long-term insomnia treatment is more limited. It is available in Thailand but not always easy to find. Keep the dose low and use it at the right time, which is something a doctor can advise on.

A Note on Sleeping Pills in Bangkok

This is something I need to address directly because I see expats get into trouble with it.

Some sedating antihistamines are available from pharmacies without a prescription. Stronger medications, including benzodiazepines and Z-drugs, require one under Thai law. These can be appropriate for short-term use under medical supervision. The problem is that many people use them unsupervised, for too long, without understanding the risks.

Benzodiazepines carry a real risk of dependency. They also cause rebound insomnia: when you stop, your sleep can be significantly worse than before you started. That is not alarmism. It is a reason to have a doctor involved if you think you need medication. At Doctor Bangkok, we can assess your situation on the same day, discuss whether short-term medication makes sense, and prescribe appropriately if it does. We can also help if you are already dependent and want to taper safely.

When to See a Doctor and What to Expect

Come in if your sleep trouble has lasted more than three weeks, if it is affecting your work or mood, or if you genuinely cannot identify a cause. Do not wait until you are exhausted and desperate.

A consultation for insomnia at Doctor Bangkok is a standard GP visit. We take a history: how long this has been happening, what your sleep looks like night to night, your stress levels, and any medications or supplements you are taking. We screen for conditions that commonly drive insomnia and are often missed. Anxiety and depression are the most frequent. Thyroid problems and sleep apnea are others.

Insomnia is frequently a symptom of something else. If we treat the sleep problem without finding the underlying cause, you get partial relief at best. A proper assessment changes that. You can read more about how we approach ongoing sleep and health concerns on our chronic conditions page.

Expats going through relocation are particularly vulnerable. The stress is real, the sleep disruption is real, and the body does not care that you chose to move here. If you are struggling and you have been in Bangkok less than three months, the adjustment itself may be the biggest factor.