Anxiety can affect much more than your thoughts. It may cause a racing heart, muscle tension, digestive discomfort, dizziness, sleep problems, difficulty concentrating, persistent worry, irritability, and changes in behavior.

 

Some anxiety is normal. Feeling nervous before an important presentation, medical appointment, job interview, or difficult conversation does not necessarily mean that you have an anxiety disorder. Anxiety becomes more concerning when it is persistent, difficult to control, out of proportion to the situation, or disruptive to work, relationships, sleep, school, or everyday responsibilities.

 

 

This guide explains 23 common physical and psychological symptoms of anxiety, why they happen, how anxiety differs from a clinical disorder, and when professional evaluation may be appropriate.

Medical disclaimer: This article is for educational purposes only and does not provide a diagnosis. Anxiety-like symptoms may also be caused by medical conditions, medications, substances, sleep problems, or other mental health conditions. Consult a qualified healthcare professional for personalized evaluation.

 

What Is Anxiety?

Anxiety is a feeling of fear, nervousness, uneasiness, or anticipation of possible danger.

It can activate the body’s stress response. The heart may beat faster, breathing may become heavier, muscles may tighten, and attention may become focused on possible threats.

In short-term situations, this response can be helpful. It may increase alertness and prepare the body to react.

An anxiety disorder is different from occasional nervousness. Anxiety disorders involve fear or worry that does not go away, may worsen over time, and begins to interfere with everyday life.

 

Physical vs. Psychological Anxiety Symptoms

Anxiety symptoms are often divided into three groups:

• Physical symptoms, such as rapid heartbeat, sweating, or muscle tension;
• Psychological symptoms, such as excessive worry or fear;
• Behavioral symptoms, such as avoidance or repeated reassurance-seeking.

A person does not need to experience every symptom.

Some people primarily notice physical discomfort. Others experience constant worry without dramatic physical symptoms. Symptoms may also change depending on the situation and the type of anxiety involved.

 

23 Common Signs and Symptoms of Anxiety

 

1. Excessive Worry

Persistent worry is one of the most recognized symptoms of anxiety.

A person may repeatedly worry about:

• Health;
• Money;
• Work;
• Family;
• Relationships;
• Making mistakes;
• Being late;
• Future problems;
• Ordinary responsibilities.

The worry may feel difficult to stop even after the person recognizes that it is excessive.

In generalized anxiety disorder, worry commonly affects several areas of life rather than one specific issue.

 

2. Difficulty Controlling Worry

Many people with anxiety say they understand that their thoughts are unhelpful but cannot simply “turn them off.”

The mind may move from one concern to another, searching for possible problems or worst-case scenarios.

Attempts to suppress these thoughts may sometimes make them feel more persistent.

Difficulty controlling worry is particularly important when evaluating generalized anxiety disorder. For that diagnosis, excessive anxiety and worry are generally present on most days for at least six months and are difficult to control.

 

3. Feeling Restless or On Edge

Anxiety may create a feeling of internal agitation.

You may feel:

• Unable to sit still;
• Uncomfortable when trying to relax;
• Constantly alert;
• As though something bad is about to happen;
• Driven to keep moving or checking things.

This sensation is sometimes described as being “on edge.”

Restlessness is a common feature of generalized anxiety disorder, although it can occur in other conditions as well.

 

4. Irritability

Anxiety does not always look like fear.

For some people, it appears as:

• Impatience;
• Frustration;
• A short temper;
• Sensitivity to noise;
• Becoming overwhelmed by small problems;
• Feeling easily annoyed.

Constant worry and physical tension can reduce emotional tolerance, making ordinary inconveniences feel more difficult to handle.

 

5. Difficulty Concentrating

Anxiety can make it difficult to focus on work, conversations, reading, or routine tasks.

Part of the mind may remain occupied with possible threats or future problems.

You may:

• Read the same paragraph repeatedly;
• Lose track of conversations;
• Forget what you were doing;
• Struggle to make decisions;
• Feel mentally scattered.

Difficulty concentrating is a recognized symptom of generalized anxiety disorder.

 

6. Racing Thoughts

Racing thoughts can feel like several concerns are competing for attention at the same time.

You may rapidly move between questions such as:

• “What if something goes wrong?”
• “What if I made a mistake?”
• “What will people think?”
• “What if I cannot handle it?”

Racing thoughts can be especially noticeable at night, when there are fewer distractions.

However, racing thoughts are not exclusive to anxiety and may occur in other mental health conditions. A professional evaluation can help clarify the cause.

 

7. A Sense of Dread

Some people experience a persistent sense that something bad is about to happen, even when they cannot identify a specific threat.

This may feel like:

• Impending danger;
• A vague sense of doom;
• Fear without a clear reason;
• Inability to feel safe;
• Constant anticipation of bad news.

During a panic attack, the sense of dread may become intense and may include fear of dying or losing control.

 

8. Fear of Losing Control

Anxiety may create fears about fainting, becoming embarrassed, having a panic attack, behaving irrationally, or being unable to escape a situation.

The fear may become stronger than the actual risk.

Some people begin avoiding places where they believe losing control would be especially difficult, such as:

• Crowded stores;
• Public transportation;
• Elevators;
• Airplanes;
• Meetings;
• Restaurants;
• Long lines.

 

9. Repeatedly Seeking Reassurance

A person with anxiety may repeatedly ask others whether everything is okay.

Examples include asking:

• “Are you angry with me?”
• “Do you think this symptom is serious?”
• “Did I make a mistake?”
• “Are you sure nothing bad will happen?”
• “Do you think I handled that correctly?”

Reassurance may provide temporary relief, but the worry often returns.

Repeated reassurance-seeking is recognized as a behavioral feature that may accompany anxiety disorders.

 

10. Avoiding Certain Situations

Avoidance is one of the most important behavioral signs of anxiety.

A person may avoid:

• Social situations;
• Driving;
• Crowded places;
• Public speaking;
• Medical appointments;
• Flying;
• Leaving home alone;
• Activities associated with a previous panic attack.

Avoidance may reduce anxiety temporarily, but it can gradually make life more restricted.

When fear causes someone to stop doing normal activities, it may indicate that anxiety has crossed an important clinical threshold.

 

11. Rapid or Pounding Heartbeat

Anxiety activates the body’s stress response, which may increase heart rate.

A person may feel:

• A pounding heartbeat;
• Fluttering in the chest;
• Skipped beats;
• A racing pulse;
• Awareness of every heartbeat.

Palpitations can occur during anxiety or panic, but they may also be caused by arrhythmias, thyroid conditions, caffeine, medications, dehydration, or other medical issues.

New, persistent, or severe heart symptoms should not automatically be assumed to be anxiety.

 

12. Shortness of Breath

Anxiety may cause rapid or shallow breathing.

This can create sensations such as:

• Not getting enough air;
• Needing to take repeated deep breaths;
• Tightness around the chest;
• Feeling unable to complete a full breath;
• Breathing faster than usual.

Shortness of breath is common during panic attacks, but it can also signal heart, lung, or other medical problems.

Seek urgent medical attention for severe or unexplained breathing difficulty.

 

13. Chest Tightness or Chest Pain

Muscle tension, changes in breathing, and increased alertness may contribute to chest discomfort during anxiety.

A person may experience:

• Pressure;
• Tightness;
• Sharp pain;
• Burning;
• A heavy sensation;
• Tender chest muscles.

Because chest pain can also be a sign of a serious medical problem, first-time, severe, persistent, or unexplained chest pain requires medical evaluation.

Call emergency services when chest pain is accompanied by fainting, severe shortness of breath, sweating, weakness, or pain spreading to the arm, jaw, shoulder, or back.

 

14. Sweating

Anxiety may increase sweating even when the temperature is comfortable.

Sweating may affect:

• The palms;
• Face;
• Underarms;
• Back;
• Entire body.

Some people become anxious about others noticing the sweating, which can intensify social anxiety.

Sweating may also occur with infections, low blood sugar, hormonal changes, medications, or other health conditions.

 

15. Trembling or Shaking

Anxiety may cause visible or internal trembling.

You may notice:

• Shaky hands;
• Trembling legs;
• A shaky voice;
• Muscle twitching;
• A vibrating feeling inside the body.

Trembling and twitching are recognized physical symptoms of generalized anxiety, while shaking is also common during panic attacks.

 

16. Dizziness or Lightheadedness

Anxiety-related breathing changes may contribute to dizziness, lightheadedness, or feeling unsteady.

Some people describe:

• Feeling as though they might faint;
• A floating sensation;
• An unstable feeling while walking;
• Difficulty focusing visually;
• Feeling disconnected from their surroundings.

Dizziness can also result from dehydration, low blood pressure, inner-ear conditions, anemia, medication effects, or neurological problems.

Persistent or severe dizziness should be medically assessed.

 

17. Nausea or Stomach Discomfort

The digestive system is sensitive to stress.

Anxiety may cause:

• Nausea;
• Stomach pain;
• Cramping;
• A “churning” stomach;
• Loss of appetite;
• Diarrhea;
• Frequent bathroom trips;
• A feeling of butterflies in the stomach.

The NIMH includes stomachaches and frequent bathroom trips among possible symptoms associated with generalized anxiety disorder.

Persistent digestive symptoms still require evaluation because they may have causes unrelated to anxiety.

 

18. Muscle Tension

Anxiety can keep the muscles partially contracted for long periods.

Common areas of tension include:

• Neck;
• Shoulders;
• Jaw;
• Back;
• Forehead;
• Hands.

A person may clench the jaw, grind the teeth, raise the shoulders, or maintain a rigid posture without noticing.

Chronic tension may contribute to soreness, stiffness, and tension-type headaches.

 

19. Headaches and Unexplained Aches

Anxiety may be associated with:

• Headaches;
• Neck pain;
• Shoulder pain;
• Back discomfort;
• Jaw pain;
• Generalized muscle aches.

These symptoms may result partly from tension, poor sleep, altered breathing, or prolonged stress.

Physical pain should not automatically be attributed to anxiety, especially when it is new, severe, progressive, or accompanied by neurological symptoms.

 

20. Fatigue

Anxiety can be exhausting.

The body may remain in a heightened state of alertness, while worry disrupts sleep and concentration.

Fatigue may feel like:

• Low physical energy;
• Mental exhaustion;
• Needing more rest than usual;
• Feeling drained after social situations;
• Difficulty beginning everyday tasks.

Fatigue is one of the symptoms considered when evaluating generalized anxiety disorder.

It may also result from anemia, thyroid problems, sleep apnea, infections, depression, medications, or other medical conditions.

 

21. Difficulty Sleeping

Anxiety may interfere with both falling asleep and staying asleep.

Common patterns include:

• Racing thoughts at bedtime;
• Replaying conversations;
• Worrying about the following day;
• Waking during the night;
• Waking too early;
• Feeling physically tired but mentally alert;
• Sleeping lightly.

Sleep problems may worsen anxiety the next day, creating a cycle of poor sleep and increased emotional sensitivity.

 

22. Numbness or Tingling

During intense anxiety or panic, some people experience numbness, tingling, or pins-and-needles sensations.

These may affect:

• Fingers;
• Hands;
• Feet;
• Face;
• Arms;
• Legs.

Rapid breathing can contribute to these sensations. Tingling and numbness are also reported during panic attacks.

However, sudden one-sided numbness, weakness, facial drooping, speech difficulty, or confusion requires emergency medical attention.

 

23. Feeling Detached or Unreal

Intense anxiety may cause a person to feel disconnected from the body or surroundings.

This may include:

• Feeling as though the world is unreal;
• Feeling outside your body;
• Feeling emotionally numb;
• Experiencing the environment as distant or dreamlike;
• Feeling disconnected from your own actions.

These experiences are sometimes called derealization or depersonalization.

They can occur during panic attacks and may be extremely frightening, even though the person usually remains aware that something feels unusual.

 

What Is a Panic Attack?

A panic attack is a sudden episode of intense fear accompanied by strong physical and psychological symptoms.

Possible symptoms include:

• Racing heartbeat;
• Sweating;
• Trembling;
• Chest discomfort;
• Shortness of breath;
• Nausea;
• Dizziness;
• Choking sensations;
• Numbness or tingling;
• Fear of dying;
• Fear of losing control;
• Feeling detached from the body.

Panic attacks often begin quickly and commonly last several minutes, although the emotional effects may continue longer. Having one panic attack does not automatically mean that someone has panic disorder.

Panic disorder generally involves repeated unexpected panic attacks plus ongoing concern or behavioral changes related to future attacks.

 

When Does Normal Anxiety Cross a Clinical Threshold?

There is no single symptom count that determines whether all forms of anxiety are clinical.

Healthcare professionals usually consider several factors.

 

1. The Anxiety Is Persistent

Normal anxiety often decreases after the stressful situation ends.

Clinical anxiety may continue for weeks or months, return repeatedly, or remain present even when there is no immediate threat.

For generalized anxiety disorder, excessive worry is generally difficult to control on most days for at least six months. Other anxiety disorders have different diagnostic requirements.

 

2. The Anxiety Is Out of Proportion

The fear or worry may be much stronger than the actual level of danger.

For example, a person may recognize that a situation is relatively safe but still experience intense physical symptoms or feel unable to face it.

 

3. It Interferes With Daily Life

Interference with functioning is one of the most important warning signs.

Anxiety may begin to affect:

• Job performance;
• School attendance;
• Relationships;
• Sleep;
• Financial decisions;
• Medical care;
• Travel;
• Parenting;
• Personal hygiene;
• Normal responsibilities.

Symptoms that are persistent, disproportionate, and disruptive may meet the general clinical threshold for an anxiety disorder.

 

4. Avoidance Is Restricting Your Life

Avoidance may become clinically significant when you:

• Stop driving;
• Refuse invitations;
• Avoid work meetings;
• Cannot enter crowded places;
• Skip medical appointments;
• Avoid leaving home;
• Need another person present to complete ordinary activities.

The more situations someone avoids, the more anxiety may control daily decisions.

 

5. You Spend Significant Time Managing Anxiety

Anxiety may occupy hours of the day through:

• Worrying;
• Checking;
• Researching symptoms;
• Seeking reassurance;
• Preparing for unlikely problems;
• Replaying conversations;
• Trying to prevent feared outcomes.

Even when someone continues functioning, the amount of mental effort required may indicate significant distress.

 

Can an Online Anxiety Test Diagnose You?

No.

Online questionnaires can help screen for symptoms and indicate whether professional evaluation may be useful. They cannot confirm an anxiety disorder or determine whether symptoms are caused by another medical or mental health condition.

A clinician may evaluate:

• Which symptoms are present;
• How long they have lasted;
• What triggers them;
• How much they interfere with life;
• Medical history;
• Medications and supplements;
• Caffeine, alcohol, and substance use;
• Sleep patterns;
• Other mental health symptoms.

A physical examination or laboratory testing may sometimes be recommended to rule out conditions that can resemble anxiety.

 

Medical Conditions That Can Resemble Anxiety

Anxiety-like symptoms may occur with:

• Thyroid disorders;
• Heart rhythm problems;
• Asthma;
• Low blood sugar;
• Anemia;
• Sleep deprivation;
• Medication side effects;
• Caffeine or stimulant use;
• Alcohol or drug withdrawal;
• Hormonal changes;
• Certain neurological conditions.

This does not mean anxiety is not real. It means that physical causes may need to be considered, especially when symptoms are new or unusual.

 

When Should You Speak With a Professional?

Consider contacting a healthcare or mental health professional when:

• Anxiety lasts for several weeks or longer;
• Worry is difficult to control;
• Symptoms are becoming more intense;
• Sleep is regularly disrupted;
• You are avoiding important activities;
• Work, school, or relationships are affected;
• Panic attacks are recurring;
• You rely on alcohol or substances to cope;
• Physical symptoms remain unexplained;
• Anxiety prevents you from enjoying life.

A primary care clinician can be a practical starting point. You may also contact a psychologist, psychiatrist, counselor, therapist, or clinical social worker.

 

When Is It an Emergency?

Seek urgent help when anxiety-like symptoms include:

• Thoughts of suicide or self-harm;
• An inability to stay safe;
• Severe chest pain;
• Fainting;
• Serious breathing difficulty;
• Sudden weakness or numbness;
• Severe confusion;
• Hallucinations;
• A suspected overdose;
• A severe medication reaction.

In the United States, call or text 988 for the Suicide & Crisis Lifeline.

Call 911 or go to the nearest emergency department for an immediate life-threatening emergency.

Do not assume that severe chest pain, fainting, breathing difficulty, or sudden neurological symptoms are “just anxiety.”

 

Frequently Asked Questions

Can anxiety cause physical symptoms every day?

Yes. Persistent anxiety may cause ongoing muscle tension, fatigue, digestive discomfort, headaches, sleep disruption, or palpitations.

Daily physical symptoms should still be evaluated to rule out other causes.

 

Can you have anxiety without feeling worried?

Yes.

Some people primarily notice physical symptoms, irritability, restlessness, avoidance, or difficulty sleeping without consciously identifying persistent worry.

 

Can anxiety make you feel sick?

Yes.

Anxiety may cause nausea, stomach pain, diarrhea, appetite changes, sweating, dizziness, and fatigue.

 

How do you know whether symptoms are anxiety or a medical problem?

It is not always possible to tell based on symptoms alone.

A healthcare professional may review the timing, triggers, medical history, medications, and examination findings. Testing may be needed when a physical cause is possible.

 

Does having several anxiety symptoms mean you have a disorder?

Not necessarily.

The clinical importance depends on persistence, severity, difficulty controlling the symptoms, avoidance, distress, and interference with everyday life.

 

Can anxiety symptoms appear suddenly?

Yes.

Panic attacks may cause a sudden surge of intense physical and psychological symptoms. Other forms of anxiety may develop gradually.

 

Final Thoughts

Anxiety can affect the mind, body, and behavior.

Common signs include persistent worry, restlessness, irritability, concentration problems, avoidance, a racing heart, muscle tension, digestive discomfort, dizziness, fatigue, and difficulty sleeping.

Experiencing one or two symptoms during a stressful period does not automatically mean that you have an anxiety disorder.

The clinical threshold is more likely to be crossed when anxiety is persistent, difficult to control, out of proportion to the situation, or disruptive to everyday life.

Physical symptoms should also be taken seriously. Anxiety can cause real physical discomfort, but similar symptoms may occur with heart, thyroid, respiratory, neurological, hormonal, or other medical conditions.

A qualified professional can help determine what is causing the symptoms and recommend an appropriate treatment plan.

 

 

Meta description: Discover 23 physical and psychological symptoms of anxiety, how anxiety affects the body, and when the signs may indicate an anxiety disorder.