Anxiety in the Body: Understanding Somatic Symptoms

For weeks now you've had a knot in your stomach, a tight jaw or a pressure in your chest that comes and goes. You've been to the doctor, you've had tests, and everything comes back normal. And yet the discomfort is still there. You may even have heard the phrase that hurts the most: "It's just nerves."

If this sounds familiar, I want you to know something from the start: what you feel is real. Somatization is not made up, and it is not an exaggeration. It is the way anxiety shows up in the body, and in session we see people every week who are living with it and feeling very bewildered. Understanding it is the first step towards stopping it from running your day-to-day life.

What is somatization?

To somatize is to experience in the body a discomfort that originates, wholly or in part, in stress, anxiety or emotions we have not been able to process. The pain, tension or fatigue are genuinely there: you are not imagining or faking them.

The difference lies in the origin. In somatization there is no injury or illness that fully explains the symptoms, but the nervous system is dysregulated and the body expresses it in its own way. That is why we say the body "speaks" when the mind cannot find the words, the time or the permission to do so.

It is more common than it seems. Many people who visit primary care with persistent complaints discover, once other causes have been ruled out, that sustained stress has a lot to do with it. And it doesn't only happen to people who "get overwhelmed easily": it can happen to anyone who has spent too long running in alert mode.

Why the body speaks when the mind can't

Some people have learned since childhood to "put up with it" and to downplay what they feel. Others go through periods with such a heavy load (work, caregiving, grief, uncertainty) that there is no room left to stop and ask themselves how they are. Meanwhile, emotions don't disappear: they look for another way out.

That way out is often the body. It isn't a malfunction or a weakness, but the natural response of an organism trying to tell you that something needs attention. The problem arises when the warning becomes constant and we don't know how to read it.

The mind-body connection, explained without jargon

Think of your nervous system as an alarm system. When it perceives a threat, real or imagined, it triggers what we know as the fight-or-flight response: your heart speeds up, your breathing gets faster, your muscles tense and your digestive system takes a back seat. All of this is designed to help you react to a specific danger.

This response involves what is known as the stress axis, a chain of signals between the brain and the glands that release hormones such as cortisol and adrenaline. It works wonderfully when the danger is brief. But modern life rarely gives us a break: deadlines, money worries, family conflicts, a phone that never stops buzzing.

When the alarm stays on for weeks or months, the body never gets the chance to return to a resting state. The evidence suggests that this sustained activation can contribute to chronic muscle tension, digestive problems, sleep difficulties and greater sensitivity to pain. It isn't magic: it's physiology working overtime.

What's more, the brain and the gut are in constant communication. That is why so many people feel stress in their stomach before they notice it in their thoughts.

What anxiety feels like in the body: common symptoms

Somatization takes very different forms from one person to another. These are some of the ones we see most often:

• Muscle tension: heavy shoulders and neck, a clenched jaw, knots that keep coming back again and again.
• Headaches: a band-like feeling or pressure, especially at the end of the day.
• Digestive discomfort: a knot in the stomach, gas, nausea, heartburn, or diarrhea and constipation that alternate.
• Chest tightness: a feeling of heaviness or of not getting enough air.
• Palpitations: strong or racing heartbeats, sometimes at rest.
• Dizziness or unsteadiness: a "floaty" head or a sense that the ground is moving.
• Fatigue: tiredness that doesn't go away even after sleeping.
• A lump in the throat: difficulty swallowing or a feeling of something stuck there.
• Sleep problems: trouble falling asleep, waking up during the night or unrefreshing sleep.

The fact that a symptom appears on this list doesn't mean it is anxiety. And that brings us to a crucial point.

First things first: always rule out a medical cause

This is the most important section of the article. For any physical symptom that is persistent, new or worrying, the first step is to see your doctor. There are many conditions (thyroid, heart, digestive, anemia, vitamin deficiencies, hormonal problems, among others) that can produce symptoms similar to those of anxiety, and only a healthcare professional can assess them with tests and a physical examination.

This isn't about diagnosing yourself, nor about assuming it's the cause because "it must be nerves." Nor is it about searching for answers on the internet at three in the morning. It's about going to the right person, describing your symptoms in detail and letting physical causes be ruled out.

If your doctor concludes that there is nothing organic to explain it, or that there is something but it doesn't account for everything you feel, then it makes sense to look at the role that stress and anxiety play. The two can coexist: you can have a medical condition and anxiety can also amplify it. A good approach works as a team and doesn't set the doctor and the psychologist against each other.

The vicious circle: symptom, fear and more anxiety

One of the reasons somatization becomes chronic is a very human mechanism. Imagine you feel a sharp twinge in your chest. Your mind, already on alert, interprets it as a threat: "What if something serious is happening to me?" That fear activates the nervous system again, your heart beats faster, your breathing becomes shallow and the sensation grows. More symptom, more fear, more anxiety.

The circle usually looks like this:

• Anxiety or sustained stress produces a physical sensation.
• You notice the sensation and interpret it as dangerous.
• Fear of the symptom appears and you monitor yourself more closely.
• The monitoring and the fear raise your anxiety, and the symptom intensifies.

Over time, many people start avoiding situations (the gym, meeting friends, travelling alone on public transport) for fear that the symptom will come back. Their world shrinks and anxiety gains ground. Breaking this circle doesn't mean fighting the symptom, but changing how we relate to it.

Somatization and health anxiety: they are not the same

These concepts sometimes get mixed up, so it's worth clarifying briefly. In somatization the physical symptom predominates, and the worry usually follows. In health anxiety (what used to be popularly called hypochondria) the central issue is a persistent fear of having a serious illness, even when tests come back normal and doctors offer reassurance.

In practice, the two can overlap and feed each other. If you recognize yourself in that constant search for reassurance (checking symptoms, repeating tests, taking your own pulse), tell us about it in session. It is very treatable, and you don't have to carry it alone.

What you can do to calm your nervous system

Although professional support is ideal, there are habits that help lower activation and regain a sense of control. They aren't magic solutions: they work better with consistency than with intensity.

Breathe slowly and mindfully

Calm breathing, with the exhale slightly longer than the inhale, sends your nervous system a signal of safety. Try it for a few minutes, two or three times a day, not just when you feel bad. Practicing when you're calm means it will be there for you when you need it.

Move regularly

Physical activity, even a brisk walk, helps metabolize stress hormones and improves mood and sleep. Choose something you enjoy: the best activity is the one you will actually keep doing.

Look after your sleep

Sleeping badly feeds anxiety, and anxiety makes sleep worse. It helps to keep regular schedules, cut down on screens before bed, limit caffeine in the afternoon and build a calm routine for the end of the day.

Reduce bodily hypervigilance

Constantly scanning your body for sensations amplifies them. When you notice you're tuned in to your pulse, your breathing or every twinge, redirect your attention to something external: a conversation, a manual task, your surroundings. The aim is not to ignore your body, but to stop living on watch over it.

Put a name to what you feel

Identifying the emotion behind the symptom reduces its intensity. Ask yourself: what happened today? What am I avoiding feeling? Is there something I've been putting off for a while? Writing a few unfiltered lines each night helps the emotion find another outlet besides the body.

When to seek psychological help

It's a good idea to consult a psychology professional if:

• Your symptoms keep recurring or persist even though your medical tests are normal.
• You worry constantly about your symptoms or your health.
• You avoid activities you used to enjoy for fear of feeling unwell.
• You notice that your energy, sleep or mood are suffering.
• You feel you live in constant tension and don't know how to stop.

You don't need to be "worse" to ask for help. The sooner it is addressed, the easier it usually is to break the circle, but it is never too late to start.

How therapy helps with somatization

Psychotherapy offers a safe space to understand what your body is trying to communicate. In session we work, among other things, on the following:

• Understanding how your stress response works and what keeps it switched on.
• Identifying the catastrophic thoughts that feed the fear of the symptom.
• Learning emotional and bodily regulation strategies tailored to you.
• Recognizing and expressing emotions that have been on hold for years.
• Gradually getting back to the activities you had stopped doing.

The evidence suggests that cognitive-behavioral approaches, as well as those based on emotional regulation and mindfulness, are helpful in these cases. What matters most is that therapy fits your history and your pace, and that you move forward feeling understood, never judged.

Your body is not your enemy

Somatization can be exhausting and frightening, but it says something important: that you have been making an enormous effort for a long time and that your body needs rest, attention and care. It is a signal, not a sentence.

With information, habits that regulate your nervous system and, if you need it, psychological support, your body can feel like a safe place again. Start by booking an appointment with your doctor if you haven't already and, if physical causes have already been ruled out, take the next step: talk to a professional who can help you understand what your body is telling you. You deserve to feel well, and that change starts today, with one small decision.

If you want to keep reading, our article on panic attacks may help you. And if you feel you could use professional support, you can see how we approach anxiety and stress.