Anxiety Disorders – Symptoms, Types, Causes, and Treatment

What are anxiety disorders?

Anxiety disorders are not a single specific illness, but a broader group of disorders in which the predominant symptoms are anxiety, tension, a sense of danger, or avoidance of situations that cause severe distress. For one person, the problem may be constant worrying; for another, sudden panic attacks; and for yet another, a strong fear of social evaluation social judgment, traveling, enclosed spaces, or specific stimuli such as blood, needles, or animals.

The common thread is that the illness begins to negatively impact daily life. A person may stop going out, put off important matters, avoid conversations, constantly check symptoms online (and nowadays increasinglyuse AI chatbots), seek reassurance, or base decisions on the goal of “just not feeling anxious.” Importantly, in the short term, such coping strategies may bring relief, but in the long term they often perpetuate the problem or even exacerbate it.

Anxiety disorders can occur on their own, but they may also co-occur with depression, sleep disorders, addictions, psychosomatic problems, chronic stress, or relationship difficulties. Therefore, a good diagnosis should not be limited to the question: “Is this anxiety?”, but should also include the question: “What triggers this anxiety, what sustains it, and how does it affect the person’s life?”

How are anxiety disorders formally classified?

In the ICD-10, anxiety disorders are classified under the broad category F40–F48, which includes neurotic, stress-related, and somatoform disorders. This group includes, among others, phobias, panic disorder, generalized anxiety disorder, OCD, reactions to severe stress, PTSD, adjustment disorders, dissociative disorders, and somatization disorders.

In ICD-11, the classification is more precise. Anxiety and fear-related disorders are classified under group 6B00–6B0Z. Obsessive-compulsive and related disorders are described separately, i.e., 6B20–6B2Z, as are specific stress-related disorders, i.e., 6B40–6B4Z.

Similarly, in the DSM-5-TR, anxiety disorders are a separate chapter, and OCD and PTSD no longer belong to the same category. OCD is classified under obsessive-compulsive and related disorders, while PTSD, acute stress disorder, and adjustment disorders are classified under trauma- and stress-related disorders.

Anxiety, fear, and stress—how are they different?

Fear is a reaction to a specific, recognizable threat. When someone sees an oncoming car, an aggressive dog, or a real danger, the body mobilizes itself to act. The heart rate accelerates, blood pressure rises, attention focuses on the threat, and the body prepares to fight, flee, or freeze.

Fear is often associated with a threat that is vague, anticipated, or difficult to grasp. The person feels that “something bad might happen,” although they cannot always pinpoint exactly what. Tension, vigilance, analysis of various scenarios, and concerns about health, the future, relationships, work, or the safety of loved ones may arise. We have described the psychological and biological differences between anxiety and fear separately in the article Anxiety and Fear – Psychological Differences and Mechanisms .

Stress is the body’s general response to demands, pressure, or overload. It may be accompanied by anxiety, but not all stress constitutes an anxiety disorder. We speak of a disorder when the symptoms are severe, chronic, disproportionate, difficult to control, and actually interfere with functioning.

Does anxiety always indicate an anxiety disorder?

No. Anxiety can be a symptom of a mental disorder, but it can also arise in the course of somatic diseases, hormonal disorders, cardiac problems, neurological diseases, the effects of psychoactive substances, poisoning, withdrawal syndrome, or chronic physical exhaustion.

Therefore, when experiencing severe, new, sudden, or unusual symptoms, you shouldn’t automatically assume that “it’s just nerves.” Especially when chest pain, fainting, shortness of breath, heart rhythm disturbances, neurological symptoms, sudden weakness, or a significant decline in functioning occur, a medical consultation may be necessary.

Only after ruling out significant somatic causes can one consider, with a high degree of certainty, whether anxiety disorders are the predominant issue. This is not “diagnostic nitpicking.” It is simply a sensible approach, especially in the field of health, where jumping to conclusions too quickly can do more harm than good.

Symptoms of anxiety disorders

The symptoms of anxiety disorders can vary widely. For some people, thoughts and emotional tension dominate; for others, physical symptoms; and for still others, avoidance. Often, these three areas feed into one another: a distressing thought triggers a physical symptom, the physical symptom is interpreted as a threat, and the person begins to avoid situations in which the symptoms might return or employs other strategies. This is a brief description of the vicious cycle of anxiety.

Psychiatric symptoms

Common psychological symptoms include:

• constant worrying,
• a sense of danger despite the absence of any real threat,
• I'm having a hard time calming down,
• emotional tension,
• irritability and low frustration tolerance,
• difficulty concentrating,
• difficulty making decisions,
• a sense of losing control over one's thoughts,
• increased susceptibility to cognitive distortions ,
• a sense that the surroundings are unreal or a feeling of detachment from oneself.

A person with severe anxiety may feel as though their mind is constantly racing. Their thoughts revolve around health, work, relationships, the future, money, safety, or possible failures. Even when one fear is allayed, another quickly arises. The brain then functions like an exceptionally ambitious quality control department that, unfortunately, confuses vigilance with catastrophizing.

Physical symptoms

Pain is very often felt in the body. It can cause:

• heart palpitations,
• rapid heart rate,
• shortness of breath or a feeling of not being able to breathe deeply,
• chest tightness,
• paralysis of the arms or the entire body,
• increased sweating,
• dizziness,
• a feeling of weakness or instability,
• tingling or numbness in the limbs,
• voltage,
• stomach pain, nausea, diarrhea, or frequent urination,
• dry mouth, a tightness in the throat, or a sensation of a "lump" in the throat.

The physical symptoms can be so intense that the person fears a heart attack, suffocation, fainting, loss of control, or death. This is one of the reasons why many people with panic attacks first go to their family doctor, a cardiologist, or the emergency room. And there’s nothing strange about that—when the body sets off a fire alarm, a person isn’t expected to know right away whether the building is on fire or if it’s just the toast burning.

Behavioral symptoms

The third group of symptoms relates to behavior. A person may begin to avoid places, people, conversations, travel, public speaking, medical exams, going out alone, or situations in which anxiety has previously arisen.

Avoiding a situation usually provides temporary relief. The problem is that, in the long run, it teaches the brain that the situation was indeed dangerous. If someone avoids a store after a panic attack, they may feel relief. But the brain records a simple message: “The store was a threat; avoiding it helped.” In this way, instead of fading away, the fear begins to expand its territory. As a result of the fear response spreading to an ever-increasing number of stimuli and situations, the phenomenon of fear generalization .

Can psychological symptoms resemble a physical illness?

Yes. These symptoms may resemble heart disease, respiratory conditions, thyroid disorders, neurological disorders, metabolic problems, or the effects of certain substances. Heart palpitations, chest tightness, shortness of breath, tremors, dizziness, or tingling in the limbs should not automatically be dismissed as “just stress.”

Depending on your symptoms, your doctor may consider, among other things, basic blood tests, an evaluation of thyroid hormones, an ECG, blood pressure measurement, and an assessment of chronic diseases, medications, stimulants, and lifestyle. In some cases, more extensive internal medicine, cardiology, or neurology evaluations may also be necessary.

This is especially important when symptoms appear for the first time, are very severe, change in nature, or occur in a person with physical illnesses. Good psychological help does not involve pretending that the body does not exist. The body exists, it has its own alarm mechanisms, and sometimes it is necessary to check whether the alarm is false.

Types of anxiety disorders

Anxiety disorders encompass several different conditions. They differ in their symptoms, underlying mechanisms, and treatment approaches, so it’s not helpful to lump them all together under the label “neurosis.” It’s a bit like stomach pain—a single symptom can have many causes and requires different approaches.

Generalized Anxiety Disorder

Generalized anxiety disorder, also known as generalized anxiety syndrome, involves chronic, difficult-to-control worry. The anxiety does not pertain to a single specific situation, but to many areas of life: health, work, family, money, the future, safety, decisions, or potential mistakes.

A person may feel that they cannot “clear their mind.” Even when one issue is resolved, another topic to analyze arises. This is often accompanied by tension, sleep problems, irritability, fatigue, and difficulty concentrating. A characteristic feature of these disorders is free-floating anxiety, that is, anxiety that persists for a long time, has a less distinct onset, and subsides more slowly than a sudden panic attack.

Panic attacks and panic disorder

A panic attack is a sudden episode of intense fear accompanied by intense physical symptoms. These may include heart palpitations, shortness of breath, chest tightness, trembling, dizziness, sweating,, tingling, nausea, a sense of unreality, or fear of death, fainting, loss of control, or “going crazy.”

The most intense phase of a panic attack usually lasts from a few to several dozen minutes, and this is a characteristic feature of panic disorder, which clearly highlights the difference between generalized anxiety and panic disorder. After the attack subsides, however, fatigue, exhaustion, tension, and fear of another attack may remain. Over time, the person may begin to avoid places where an attack has occurred or where it would be difficult to get help quickly.

Agoraphobia

Agoraphobia is characterized by a fear of places or situations from which it would be difficult to leave quickly, escape, or get help. This may involve public transportation, stores, lines, bridges, movie theaters, churches, large open spaces, crowded places, or being away from home alone.

Contrary to its name, agoraphobia does not exclusively refer to a fear of open spaces. It often involves a feeling of being trapped, a lack of control, the risk of feeling unwell in a public place, or the fear that others will notice the symptoms of anxiety.

Social phobia

Social phobia involves an intense fear of being judged, criticized, embarrassed, or humiliated in social situations. A person may fear public speaking, conversations, meeting new people, eating in front of others, speaking up at a meeting, oral exams, or situations in which they may find themselves in the spotlight.

This isn’t just about ordinary shyness. The problem begins when fear leads to avoidance and significantly limits education, work, relationships, or professional development. Social phobia can influence your choice of school, college, job, relationships, career advancement, or how you function within a team.

Specific phobias

A specific phobia is an intense, disproportionate fear of a specific stimulus or situation. It may involve flying, heights, spiders, snakes, needles, blood, storms, enclosed spaces, driving, or visits to the doctor.

The person often knows that the reaction is exaggerated, but awareness alone is not enough to stop the fear. When exposed to the trigger, physical symptoms appear along with a strong urge to flee. When a phobia significantly limits one’s life, psychotherapy based on behavioral techniques and gradual exposure to the trigger can be helpful.

Obsessive-compulsive disorder

Obsessive-compulsive disorder (OCD) involves intrusive thoughts, images, or impulses, as well as compulsive behaviors intended to reduce anxiety. Obsessions are unwanted, repetitive, and often conflict with a person’s values. Compulsions may include checking, washing, counting, arranging, repeating, seeking reassurance, or performing mental rituals.

In more recent classifications, OCD is sometimes discussed separately, but in practice, many people seek information about it alongside anxiety disorders, because compulsions are very often accompanied by intense anxiety, tension, and a need for immediate relief.

Reactions to severe stress and PTSD

Anxiety can also develop after experiencing a traumatic or extremely stressful event. Symptoms may include intrusive memories, nightmares, tension, avoidance of triggers that remind the person of the event, irritability, hypervigilance, sleep problems, and a sense of danger. It is worth noting that it does not have to be solely or exclusively a direct experience of trauma; witnessing or even being informed about a tragic event can result in PTSD.

In such situations, it is particularly important to tailor the support to the nature of the experience. Not every fear following a traumatic event means PTSD, but if the symptoms persist, worsen, or disrupt daily life, it is worth consulting a specialist.

What causes anxiety disorders?

Anxiety disorders usually do not have a single cause. They most often develop as a result of a combination of biological vulnerability, temperament, life experiences, coping style, prolonged stress, and the person’s current situation.

Risk factors include:

• a family history of anxiety or depressive disorders,
• chronic stress,
• traumatic experiences,
• abuse, neglect, or a prolonged sense of danger,
• perfectionism, a strong need for control, or low self-esteem,
• somatic diseases, such as thyroid problems, diabetes, asthma, heart disease,
• sleep deprivation and chronic stress,
• alcohol, drugs, excessive caffeine, or certain medications,
• avoiding situations that trigger anxiety,
• constantly checking for symptoms and seeking reassurance.

It is worth noting that the presencedoes not automatically mean that a person will develop an anxiety disorder. It merely means that their nervous system may be more susceptible to stress. The good news is that the mechanisms of anxiety can be understood, managed, and changed.

Alcohol, psychoactive substances, and drugs

Alcohol and other psychoactive substances can have a subtle relationship with anxiety. For some people, alcohol initially reduces tension and gives a feeling of relaxation, but once its effects wear off, it can intensify anxiety symptoms. This is why some people experience marked anxiety, heart palpitations, tension, or a sense of danger the day after drinking.

If anxiety arises in the context of addiction, alcohol abuse, drug abuse, sedative use, or withdrawal syndrome, treating the symptoms of anxiety alone may not be sufficient. In such cases, it is important to address the root of the problem, namely substance use and the mechanism by which substances regulate stress.

This is also important because many medications used to temporarily relieve anxiety may carry a risk of addiction. Therefore, in cases of a history of addiction, treatment should be conducted with particular caution and under a doctor’s supervision.

What contributes to anxiety disorders?

Anxiety often persists not only because it arises, but because the person begins to respond to it in a way that provides only temporary relief. The most common coping mechanisms include avoidance, body monitoring, seeking reassurance, checking for symptoms, overanalyzing, suppressing emotions, and giving up on activities.

For example: a person who had a panic attack on a tram begins to avoid public transportation. At first, they feel relief. After some time, the fear spreads to trains, shopping malls, lines, and places from which it is difficult to leave quickly. The problem is no longer just the first panic attack, but the entire avoidance system built around it.

Constantly checking symptoms online has a similar effect. It may provide temporary reassurance, but it eventually heightens your vigilance toward your body. The person begins to monitor their heart rate, breathing, blood pressure, dizziness, and every unusual sensation. The more they try to be 100% certain, the more their anxiety demands further checks.

Protective factors – what reduces the risk of anxiety disorders?

Since there are factors that increase the risk of anxiety disorders, it is also worth mentioning protective factors. They do not provide a 100% guarantee that anxiety will not arise, but they can reduce susceptibilityto stress, facilitate the regulation of tension, and support a return to balance after difficult experiences.

Protective factors include, among others:

• stable, supportive relationships with others,
• the ability to recognize and name emotions,
• regular sleep and a relatively consistent daily routine,
• physical activity tailored to a person's abilities,
• limiting alcohol, excessive caffeine, and psychoactive substances,
• the ability to relax without feeling guilty,
• a realistic approach to oversight and accountability,
• flexible strategies for coping with stress,
• be ready to seek help before the symptoms become deeply ingrained,
• gradually facing situations you’ve been avoiding instead of permanently withdrawing from them.

Protective factors do not mean that a person “just needs to live a healthy lifestyle” and the problem will disappear. That would be too simple, and life, unfortunately, is not a gym brochure. Rather, it’s about building a psychological and biological foundation that reduces the risk of relapse and helps you notice sooner when anxiety starts to take over.

When should you seek help?

It is advisable to consult a specialist if anxiety persists for a long, returns despite attempts to cope on your own, causes you to avoid important situations, disrupts your sleep, relationships, studies, or work, leads to frequent physical symptoms, or if you experience panic attacks.

Support is particularly recommended when a person begins to organize their life around the bed: they stop going out, put off decisions, constantly seek reassurance, check for symptoms, avoid conversations, or function “on autopilot,” but at the cost of immense stress.

If you experience suicidal thoughts, a feeling of immediate danger to life, a loss of touch with reality, a severe mental crisis, or a risk of self-harm, you need urgent medical help or should contact the nearest emergency department.

What does the diagnosis of anxiety disorders look like?

The diagnosis of anxiety disorders typically begins with a discussion of symptoms, their duration, situations that exacerbate anxiety, medical history, stressors, substance use, sleep, previous mental health challenges, and current functioning. It is also important to determine whether symptoms occur in specific situations, whether they are chronic, whether they occur in episodes, or whether they are associated with avoidance.

In some cases, it is advisable to consult a doctor at the same time to rule out physical causes. This is particularly true in situations where physical symptoms predominate: heart palpitations, shortness of breath, chest pain, fainting, sudden weakness, dizziness, or neurological symptoms.

A specialist may use clinical interviews, psychological questionnaires, and differential diagnosis. The goal is not merely to identify the problem, but to understand what triggers it, what sustains it, and what forms of assistance will be most appropriate.

Treatment of anxiety disorders

The treatment of anxiety disorders depends on the type of symptoms, their severity, duration, co-occurring issues, and the individual’s life circumstances. Treatment differs for specific phobias, panic disorder with agoraphobia, generalized anxiety disorder, and yet again when anxietywith depression, addiction, insomnia, or a somatic illness.

Psychotherapy

One of the most well-researched treatments for anxiety disorders is cognitive-behavioral therapy . It helps identify the mechanisms that sustain anxiety, address catastrophic interpretations, gradually reduce avoidance, and learn new ways of responding.

Therapy often involves psychoeducation, cognitive therapy, exposure therapy, stress management techniques, breathing exercises, behavior planning, and a gradual return to normal activities. Depending on the individual and the nature of the problem, other therapeutic approaches may also be helpful.

Psychotherapy doesn't always work right away. It often requires time, consistency, and a willingness to gradually confront what a person has been avoiding. It is not a magic spell, but rather a well-planned training of the nervous system and response patterns.

Pharmacotherapy

If you experience severe, chronic, or highly debilitating symptoms, a psychiatric consultation may be helpful. Medications do not address all causes of anxiety, but they can reduce the severity of symptoms, improve sleep, limit panic attacks, and facilitate psychotherapy.

Various classes of medications are used to treat anxiety disorders. Some of them can be used on an as-needed basis, while others are intended for long-term treatment. The decision regarding pharmacotherapy should always be made by a doctor after taking a medical history, assessing contraindications, possible interactions, and the patient’s overall health.

Short-term medications versus long-term treatment

As-needed medications can quickly reduce anxiety symptoms, but they are not usually a long-term solution. Manyof them, especially benzodiazepines, may carry a risk of tolerance and dependence, so they should be used with caution, for a short period of time, and as directed by a doctor.

Medications taken long-term, such as certain antidepressants, take time to work. The effects do not appear after the first dose. For many people, improvement occurs gradually over several weeks. At the beginning of treatment, side effects may occur, and sometimes anxiety may temporarily worsen. This is precisely why it is important to stay in touch with your doctor and not stop taking your medication on your own without consulting them.

Lifestyle & Self-Help

A healthy lifestyle is no substitute for medical treatment, but it can have a significant impact on stress levels. Sleep, a regular daily routine, physical activity, limiting caffeine and alcohol, eating regular meals, and avoiding compulsive checking of symptoms are all important.

Breathing techniques, relaxation, mindfulness, journaling, exposure planning, and gradually returning to avoided situations can also be helpful. The key, however, is to ensure that self-help does not turn into yet another control ritual. If a breathing exercise becomes a compulsion performed “just to make sure nothing happens,” it’s worth discussing this with a specialist.

Self-help books – are they effective for anxiety disorders?

Yes, but under certain conditions. A stepwise approach is increasingly being used in the treatment of anxiety disorders. This means that not everyone needs to start with intensive psychotherapy or medication. For milder and moderate symptoms, psychoeducation, active symptom monitoring, proven self-help materials, exercises performed independently, and brief support from a specialist may be helpful.

The British NICE (National Institute for Health and Care Excellence) guidelines on generalized anxiety disorder and panic disorder in adults include individual self-help, supported self-help, and psychoeducational groups, among other things. Self-help can take the form of a book, a workbook, digital materials, or a program based on the principles of cognitive-behavioral therapy. In the supported version, a specialist helps you use the materials, monitors your progress, and helps you determine the next steps.

This is important because a good self-help book is not “second-rate therapy for the poor.” It can be a first, sensible step: it helps you understand the mechanism of anxiety, recognize the vicious cycle of avoidance, learn basic stress management strategies, and check whether symptoms begin to subside. For some people, this level of support may be sufficient, while for others it will serve as preparation for further psychotherapy.

However, it is important to distinguish between reliable self-help resources and random advice found online. A good book or self-help program should be based on proven methods, include specific exercises, encourage you to gradually confront avoidance, and not promise immediate “recovery anxiety.” If symptoms are severe, chronic, or with panic attacks, depression, suicidal thoughts, addiction, or significant impairment in functioning, self-help should not replace consultation with a specialist.

Guided self-help and materials for independent study

For milder or moderate symptoms, proven self-help resources may be helpful: books, workbooks, online programs, or guides based on the principles of cognitive-behavioral therapy. In the stepped-care model, it is recommended to start with the least intensive effective form of treatment and only later move on to more intensive psychotherapy or pharmacotherapy if symptoms do not subside or significantly impair functioning.

Ideally, self-help should not consist solelybut on regularly performing exercises: observing anxiety-provoking situations, recognizing catastrophic thoughts, reducing avoidance, planning small exposures, and monitoring progress. Simply reading the book can provide relief and understanding, but change usually requires practice.

Examples of self-help books on sleep and worrying

For milder symptoms, reliable self-help books and workbooks can also be helpful. It’s best to choose ones that don’t limit themselves to general advice but include specific exercises: identifying catastrophic thoughts, working through worry, reducing avoidance, planning exposure, and monitoring progress.

The titles below are examples, not an exhaustive list of the “best” books. It’s a good idea to choose materials based on whether the main issue is worry, panic attacks, avoidance, social phobia, intrusive thoughts, or general anxiety.

• Robert L. Leahy, *The Cure for Worry* – a book dedicated to addressing anxiety and worry. It can be particularly helpful for people who overanalyze, anticipate negative scenarios, and have difficulty breaking the cycle of “what if?”
• Christine A. Padesky, Dennis Greenberger, *Mind Over Mood* – a well-known self-help guide based on cognitive-behavioral therapy. It includes exercises that help you understand the connection between thoughts, emotions, behavior, and physical reactions.
• Stefan G. Hofmann, “Beyond Anxiety” – a guide combining cognitive-behavioral therapy and mindfulness strategies for working with anxiety , fear, and worry.
• David A. Clark, “The Storm in Your Head: Break the Vicious Cycle of Negative Thoughts” – a book about dealing with persistent, negative thoughts and the mechanisms that sustain them. It can be helpful for people who tend to ruminate, overanalyze, and dwell on the same fears.
• Magdalena Staniek, “Overcome Problems and Fears: Cognitive-Behavioral Therapy in Practice” – a practical guide showing how to use cognitive-behavioral therapy tools to deal with everyday difficulties, including stress, tension, and worry.

A self-help book can be a good first step, but simply reading it is usually not enough. The most effective approach involves materials you can actually work with: doing exercises, recording observations, testing new behaviors, and gradually reducing avoidance. If symptoms are severe, persist for a long time, or are associated panic attacks, depression, suicidal thoughts, addiction, or significant impairment in functioning, self-help should not replace consultation with a specialist.

Are anxiety disorders treatable?

Yes, anxiety disorders can be effectively treated. In many people, symptoms are significantly reduced or disappear. The duration of therapy depends on the type of problem, the severity of symptoms, their duration, any co-occurring difficulties, and how long the anxiety mechanism has been in place. The effectiveness of psychological treatment for anxiety disorders has been studied extensively. For example, a meta-analysis by Cuijpers and colleagues, encompassing 41 studies and 2,132 individuals with generalized anxiety disorder, demonstrated a significant effect of psychotherapy compared to control groups. In practice, this means that individuals receiving psychotherapy showed significantly greater improvement than those who did not receive this form of treatment.

Relapses are possible, but they do not mean the end. They are often a sign that the nervous system is overloaded again or that it is worth returning to familiar strategies, seeking a consultation, or taking a closer look at current stressors. Well-conducted therapy is not just about reducing symptoms, but also about understanding the mechanism so that the person knows what to do when anxiety returns.

Frequently Asked Questions About Anxiety Disorders