What Causes Headaches? Types, Patterns and When to Get Assessed
Headaches are one of the most common reasons people in Hong Kong look for help, yet a headache is not a single problem. It is a symptom with many possible causes, from muscle tension and posture to changes in sleep, stress and how the nervous system is coping. Understanding which type of headache you are dealing with, and the pattern behind it, is the first step towards lasting relief rather than reaching for pain relief again and again.
This guide explains what a headache actually is, the main types and their triggers, how to read your own pattern, and the warning signs that mean it is time to get assessed. It is educational rather than a diagnosis, and it points to when a proper assessment makes sense.
What a headache actually is
A headache is pain felt in the head or upper neck. The brain itself has no pain sensors, so what you feel does not come from the brain. It comes from the structures around it: the blood vessels, the muscles of the scalp, jaw and neck, and the nerves that supply them. Many of these structures connect closely to the top of the neck, where the joints and muscles have a direct relationship with headache patterns. This is why a problem that feels like it sits in your head so often starts lower down.
Your nervous system sits at the centre of the experience. It gathers signals from these tissues and decides how much pain to produce. When an area stays irritated, or when the system is under sustained stress, those pain signals can become easier to set off. That is one reason headaches can settle into a recurring pattern rather than being a one-off, and it is why calming the whole system matters as much as easing the sore spot.
The main types of headache
Most headaches fall into two groups. Primary headaches, where the headache is the condition itself, and secondary headaches, where the pain is a symptom of something else.
The common primary headaches are:
- Tension-type headache. The most common of all. A dull, tight, band-like pressure around the head, often on both sides, closely linked to muscle tension in the neck and shoulders, posture and stress.
- Migraine. A moderate to severe, often one-sided, throbbing pain that can arrive with nausea and sensitivity to light or sound. Migraine is a nervous system condition, not simply a bad headache, which is why it behaves so differently and needs its own approach.
- Cluster headache. Less common but intense, with sharp pain around one eye that comes in bouts over days or weeks.
Secondary headaches are set off by another cause, such as a sinus infection, dehydration, eye strain, medication overuse, or, rarely, a more serious medical problem. Cervicogenic headache, where pain is referred from the joints and muscles of the neck, also sits here, and it is one we see often in desk-based clients. For a fuller breakdown of each type, our guide to navigating the different kinds of headache goes deeper.
What triggers headaches
Triggers vary from person to person, but the common ones cluster around a few themes:
- Neck and upper back tension, often from long hours at a desk or looking down at a phone.
- Posture that loads the joints and muscles at the base of the skull, so the area stays guarded and tight.
- Stress, which raises muscle tension and makes the nervous system more sensitive to pain.
- Disrupted sleep, skipped meals, dehydration and, for some people, specific foods or alcohol.
- Bright light, long screen sessions and eye strain.
In Hong Kong the desk-and-stress combination is especially common. Long commutes, dense screen use and high-pressure work keep the neck and shoulders loaded for hours at a time, which is a large part of why tension-type and neck-related headaches are so widespread. If your days are mostly seated, our advice for desk workers and our neck pain care are worth a look.
Reading the pattern: what your headache may be telling you
The pattern often matters more than the pain in any single moment. Three questions help you, and whoever assesses you, get to the root faster. Where is it? A band around the whole head points towards tension type, a one-sided throb towards migraine, and sharp pain behind one eye in bouts towards cluster. When does it come? Note whether it lands at the end of the workday, after a poor night, with your period, or when you have skipped meals. What eases it? Movement, rest, a dark room and fresh air each tell you something different.
Keeping a simple headache diary for a fortnight, noting the time, the likely trigger and how bad it felt, usually reveals more than any single appointment. It turns a vague and worrying problem into a pattern that can be understood and worked with, and it helps care focus on the cause rather than only the symptom.
When to get a headache assessed
Most headaches are not dangerous, but some deserve prompt attention. Seek urgent medical care if you have a sudden, severe headache that peaks within seconds, the worst headache of your life, a headache with fever and a stiff neck, or a headache alongside weakness, numbness, confusion, slurred speech or loss of vision, or one that follows a head injury.
Away from these emergencies, it is worth getting assessed when the everyday pattern starts to shift. That includes headaches that are becoming more frequent or more severe, headaches that no longer respond to your usual approach, headaches that wake you at night, and a growing reliance on regular pain medication, which can itself cause a medication-overuse headache and keep the cycle going.
How ATLAS approaches headaches
Because so many headaches connect to the neck, posture and the nervous system, an assessment at ATLAS looks beyond the head itself. We take a history of your pattern and triggers, check how the joints and muscles of the neck and upper back are moving, and look at how posture and stress may be feeding the problem. Where it helps, we use objective measures rather than guesswork to understand where tension is sitting and how your nervous system is responding, so the plan is based on your findings rather than assumptions.
From there, care is educational and practical. The focus is on reducing irritation and improving how the neck, spine and nervous system work together, so headaches become less easily triggered over time. For headaches that lean towards migraine, our headaches and migraines care explains how we tailor the approach. Care is not a cure-all, and a proper assessment always comes first.
Frequently asked questions
Can a chiropractor help with headaches?
For many tension-type and cervicogenic headaches, yes. Care focuses on the neck and upper back, posture and the nervous system, which are often part of the pattern. It is not a cure-all, and a proper assessment comes first to understand what is driving your headaches before any care begins.
How do I know if my headache is serious?
Most are not serious, but treat a sudden severe headache, the worst headache of your life, or a headache with fever, a stiff neck, weakness, confusion or vision changes as an emergency and seek urgent care straight away.
When should I see someone about my headaches?
If your headaches are becoming more frequent or severe, disturbing your sleep, or leaning on regular pain relief, it is worth getting assessed rather than managing alone. Understanding the cause is what changes the pattern.
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