What is internal trembling and why does it happen? Learn how this unseen restlessness links to anxiety, when to see a doctor and what you can do about it.
"My hands aren't shaking, nobody notices anything, but something inside me is trembling." It is possible to hear this sentence from people of every age who come to the clinic. Some describe a fine vibration in the middle of their chest, some above their stomach, some throughout their whole body: a quivering, a feeling like an engine that never stops running. In everyday Turkish this is called iç titremesi, literally "inner trembling". What our mothers and grandmothers described as "My insides are trembling" or "I'm eating myself up inside" is very often this same experience. Although it is not a medical term, it is utterly real to the person living it. In this article I explain what internal trembling is, how it relates to anxiety and stress, in which situations you need to see a doctor, and how you can live more peacefully with this restlessness.
What Is Internal Trembling?
This experience is a sense of vibration or shaking that cannot be seen from the outside but that the person feels inside their body. People describe the feeling in different ways:
- "Something is fluttering in my chest."
- "It's as if there's an engine running inside me and it can't stop."
- "I'm not cold, but I'm trembling inside."
- "There's a stirring, a churning above my stomach."
- "My whole body seems to be vibrating slightly, but when I hold my hand out nothing shows."
This feeling often comes together with restlessness, an inability to keep still, and a sense that something bad is about to happen. Sometimes it starts after sudden bad news, an argument or a great fright, and lasts for hours. At other times it carries on in the background all day with no clear reason.
This feeling is hard to describe, because someone looking from the outside sees nothing. That is why the person is often met with reactions such as "You're exaggerating" or "There's nothing wrong with you", and feels alone.
Physical Causes of Internal Trembling: See a Doctor First
Before linking this feeling to anxiety, some medical conditions need to be assessed. The following can cause similar sensations:
- An overactive thyroid gland
- Low blood sugar, going without food for a long time
- Anaemia and some vitamin deficiencies
- Too much caffeine, energy drinks or smoking
- Side effects of some medicines
- Cutting down or stopping alcohol
- Hormonal changes during the transition to menopause
- Some neurological conditions
In particular, if this feeling comes with visible trembling, muscle weakness, numbness, changes in walking or speech, weight loss, fever or severe sleeplessness, you need to see a doctor. Your GP can carry out the first assessment with basic blood tests and, if necessary, refer you to an internal medicine, endocrinology or neurology specialist. If there are urgent signs such as chest pain, fainting or breathlessness, call 112 (emergency services).
Once medical causes have been ruled out, there is suitable ground for addressing the feeling's link with anxiety and stress.
How Does Anxiety Cause Internal Trembling?
The Alarm System Running Quietly
Anxiety sets off the body's system for preparing for danger. This system does not always show itself through loud symptoms such as palpitations or panic attacks. Sometimes it is experienced as a quiet but constant state of readiness. The muscles never fully relax, the body is always braced for something, and this low-level tension is felt inside as a vibration. If you would like to explore the physical and mental symptoms of anxiety in a broader framework, the article on generalised anxiety disorder can guide you.
Sudden Shock and Bad News
After surviving a traffic accident, receiving painful news or a fierce argument, many people describe "trembling inside" for hours. After a danger, the body cannot reset its adrenaline straight away; settling takes time. This is the body's ordinary process of recovery. During these hours, rather than trying to force yourself to calm down, having a warm drink, talking to someone you trust or going for a short walk can make recovery easier. If the trembling eases within a few days, this is usually a natural settling. If weeks have passed and images of the event still come alive in your mind, your sleep is disturbed and you avoid everything that reminds you of the event, it is helpful to assess with a professional whether what you are going through has turned into a post-traumatic reaction.
Ongoing Uncertainty
Waiting for a test result, an exam or job placement result, or a court ruling; living with the possibility of losing your job; worrying about the health of a loved one far away... The longer uncertainty goes on, the less the body knows when it can relax. In these periods, the inner vibration is like the bodily counterpart of the "waiting" the person carries inside.
Long-Term Caregiving and Exhaustion
People who have spent years caring for a bedridden mother, a spouse with a chronic illness or a child with special needs often describe this vibration. Waking several times a night, being constantly on alert, never having any time for themselves and being unable to say "I'm tired" to anyone leave the body in a state of alarm that never switches off. In Turkey this burden mostly falls on the shoulders of the women in the family and often stays invisible. The caregiver may brush off the vibration inside as "something everyone goes through anyway" rather than as a problem with their own health. Yet this feeling is an important sign that rest and support are needed.
Suppressed Emotions
Some people find it hard to express their anger, fear or sadness. Saying "I don't want to cause trouble" or "I'll manage", they keep their feelings inside. These feelings find a place in the body. That inner stirring may be the bodily expression of an emotion that cannot be put into words, such as suppressed anger or a hurt that has been swallowed. Of course, not every vibration points to a suppressed emotion; but it is useful to keep this possibility in mind.
When some emotions are not put into words, they find a voice in the body; internal trembling is sometimes the whisper of something left unsaid.
A Language Across Generations: "My Insides Are Trembling"
In Turkey, especially among older generations, it is common for emotional distress to be described in bodily terms. Expressions such as "My insides are tightening", "My heart is being squeezed" and "My insides are trembling" often stand in for saying "I'm very anxious", "I'm very sad" or "I'm afraid". This is a cultural language in which emotions are lived, and described, together with the body.
Let us say a woman in her seventies starts complaining every evening that "My insides are trembling" after her son moves abroad for work. Her medical check-ups come back clear. When her daughter wants to take her to a psychologist, she reacts: "A psychologist? But there's nothing wrong with me." Yet what she is experiencing may be the reflection in her body of longing, loneliness and worry about her son's safety. You can find more information on how anxiety can look in later life in the article on anxiety in older adults.
This example reminds us of something important: when someone close to us says "My insides are trembling", we need to listen not only to a bodily symptom but also to the emotion they are trying to express. Asking "What did you think about today, what upset you?" instead of interrogating them with "What's wrong, what happened?" can open the door.
Among younger generations, the same experience is described in a different language. Expressions such as "My anxiety has gone through the roof" or "I'm all jittery inside, I can't keep still" come up often on social media. Although this language makes it easier to name anxiety, it can sometimes lead to seeing every bit of restlessness as a diagnosis. Whatever generation we belong to, a balanced approach is both to take seriously what our body is telling us and not to rush to put it inside a label.
How Can You Cope with Internal Trembling?
The suggestions below are for people who have had a medical assessment and whose complaints are thought to be linked to anxiety and stress.
- Name the emotion behind the feeling. When the vibration starts, ask yourself, "What am I feeling right now?" Is it fear, anger, longing, waiting? Giving the emotion a name can lighten the load on the body a little.
- Bring your body down to the ground. Plant your feet firmly on the floor, sit fully back in a chair and lean against the backrest. Rest your hands on your knees and feel their weight. This gives the body the message "you are safe right now".
- Breathe out slowly and for a long time. Take a calm breath in through your nose and breathe out slowly and at length through your mouth. For a few minutes, focus only on lengthening your out-breath.
- Tense and release your muscles deliberately. Make fists with your hands for a few seconds, then let go. Repeat the same for your shoulders, stomach and legs. Feeling the muscles tense and relax can turn the vague vibration inside into a more concrete and manageable experience.
- Move. A short walk, going up and down the stairs, or shaking out your arms and legs for a few minutes at home helps release the energy built up in the body.
- Eat regularly and reduce caffeine. Going without food for a long time and drinking a lot of tea and coffee can increase this feeling.
- Limit your news and social media feed. Constant exposure to bad news, especially in the evening, keeps the body's alarm state alive.
- Set a worry time. Set aside fifteen minutes during the day and think about or write down your worries at that time. When a worry comes at other times, try postponing it by saying, "I'll think about this in my worry time."
When Should You Seek Professional Support?
If your medical assessment was clear but one of the following describes you, talking to a mental health professional may be useful:
- This feeling has continued almost every day for weeks
- It comes with constant worry, restlessness and a sense that something bad is going to happen
- Your sleep, appetite or concentration have been clearly affected
- It started after a loss, an earthquake, an accident or another difficult event
- Low mood, hopelessness or being unable to enjoy life also accompany it
These signs do not amount to a diagnosis on their own; but they may show that the anxiety no longer settles by itself. If the symptoms are intense, an assessment by a psychiatrist can also be part of the process. In situations where hopelessness grows very strong, your will to live diminishes or you think about harming yourself, call 112 (emergency services) without waiting or go to the nearest emergency department.
How Is Internal Trembling Approached in Therapy?
In therapy, this feeling is approached together with the person's life story, their current circumstances and their emotions. Within the framework of Cognitive Behavioural Therapy (CBT), the process usually includes the following steps:
Making sense of the feeling. When the vibration started, in which situations it intensifies and which thoughts it comes with are examined. As the person begins to see the link between this feeling and anxiety, the fear created by uncertainty also decreases.
Working with the worry cycle. The tendency to think constantly "What if...?", and the function and consequences of these thoughts, are assessed together. Ways of building a different relationship with worry are tried out.
Physical relaxation skills. Muscle relaxation, breathing and body awareness work help the person notice and release the tension in their body.
Contact with emotions. If there is suppressed anger, grief, longing or hurt, room is made for these to be put into words in a safe setting. A schema-focused perspective can help in understanding where beliefs such as "I shouldn't show my feelings" or "I must always be strong" come from.
Reviewing living conditions. Conditions that feed this restlessness, such as workload, caregiving responsibilities, financial worries or relationship problems, are discussed; small steps are planned for those that can be changed.
For more information on how anxiety is worked with, you can take a look at the anxiety and panic page.
Frequently Asked Questions
Are internal trembling and inner distress the same thing?
The two are closely related experiences that often occur together. Inner distress (what in Turkish is called iç sıkıntısı) mostly describes a feeling of tightness, being overwhelmed and restlessness, whereas internal trembling describes a vibration or stirring felt in the body. Both are common during periods of anxiety, stress and low mood.
Why does the vibration inside me get worse at night?
At night, attention that has been directed outwards all day turns inwards, and thoughts and worries that were pushed aside become more noticeable. Tiredness also makes it harder for the body to manage its stress response. Creating a calming routine before bed and writing your worries down can help.
Do older people experience this feeling more often?
It can occur at any age; but in later life it may be voiced more often because of losses, loneliness, health problems and the tendency to describe emotions in bodily language. If an older relative describes this feeling, it is important first to have a medical assessment and then to talk about the emotional burden as well; getting support with this is possible at any age.
Is my insides trembling when I'm hungry a sign of anxiety?
Going without food for a long time can lower blood sugar and cause trembling, sweating and a feeling of restlessness; this can also happen independently of anxiety. If the feeling clearly eases when you regulate your meals, your eating pattern is an important factor. If it happens often, it is a good idea to consult your doctor about having your blood sugar assessed.
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Eda Erkan Alapala
Klinik Psikolog. İstanbul Kent Üniversitesi Klinik Psikoloji Tezli Yüksek Lisans mezunu; bilişsel davranışçı terapi, çocuk merkezli oyun terapisi ve çocuk-ergen psikoterapisi alanlarında eğitimlerini tamamlamıştır.
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