What Is Anxiety? Signs, Symptoms and When to Get Help

Almost everyone has felt anxious at some point. Before a big exam, a job interview, or a difficult conversation, that knot in your stomach, the racing thoughts, and the restlessness are normal human responses to uncertainty.

But for millions of people, anxiety goes well beyond those moments. It becomes a constant companion that shows up uninvited, makes everyday situations feel overwhelming, and refuses to leave even when there is no obvious reason for it to be there.

If you have ever Googled “why am I always anxious” at 2am, or wondered whether what you are feeling is normal, this article is for you. As a clinical psychologist, I want to walk you through what anxiety actually is, how to recognise it, and most importantly, what to do about it.

What Is Anxiety, Really?

Anxiety is your brain’s alarm system. When your mind perceives a threat, whether real or imagined, it triggers a cascade of physiological and psychological responses designed to protect you. Your heart rate increases, your breathing quickens, your muscles tense. This is the “fight or flight” response, and in genuine danger, it is lifesaving.

The problem is that this alarm system does not always distinguish between a tiger chasing you and a difficult email from your manager. For people with anxiety disorders, the alarm goes off too often, too loudly, and in situations that do not warrant it.

“Anxiety becomes a disorder not when you feel it, but when it starts running your life: when it makes decisions for you, limits what you do, and refuses to switch off.”

The key distinction is this: anxiety as an emotion is universal and often useful. Anxiety as a disorder is persistent, disproportionate, and disruptive to daily life.

The Different Types of Anxiety Disorders

Anxiety is not a single condition. It is an umbrella term for several related disorders, each with its own pattern of symptoms and triggers.

Generalised Anxiety Disorder (GAD)

This is what most people think of when they hear the word anxiety. GAD involves excessive, persistent worry about a wide range of everyday things, including money, health, relationships, and work, that is difficult to control. It affects approximately 6.8 million adults in the US alone, with women twice as likely to be diagnosed as men.

Social Anxiety Disorder

An intense fear of social situations and being judged or embarrassed by others. It is commonly mistaken for shyness, but it goes much deeper. It can prevent people from attending social events, speaking in meetings, making phone calls, or even eating in public. It is one of the most under-recognised and under-treated anxiety disorders.

Panic Disorder

Characterised by sudden, intense episodes of overwhelming fear called panic attacks. These can come completely out of nowhere, on a train, in a supermarket, or lying in bed, and the physical symptoms can be so severe that people often believe they are having a heart attack.

Specific Phobias

An extreme, irrational fear of a specific object or situation, such as flying, spiders, needles, or heights. The fear is recognised as irrational by the person experiencing it, but that does not make it any less paralysing.

Health Anxiety

A preoccupation with having or developing a serious illness, despite having little or no medical evidence. People with health anxiety often spend hours checking their bodies for symptoms, seeking reassurance, or avoiding medical appointments out of fear of what they might find.

OCD and PTSD

While now classified separately in the DSM-5, Obsessive-Compulsive Disorder (OCD) and Post-Traumatic Stress Disorder (PTSD) share significant overlap with anxiety and are often discussed together with anxiety disorders.

Signs and Symptoms: Physical and Emotional

One of the most important things I tell my clients is this: anxiety lives in the body as much as in the mind. Many people who come to me have been to three or four doctors for physical complaints before anyone suggests anxiety might be the cause.

Here are the most common signs across both emotional and physical domains:

Emotional and Cognitive Symptoms

Physical Symptoms

What Causes Anxiety?

Anxiety rarely has a single cause. In most cases it is a combination of factors that build over time:

Biology

Your brain chemistry plays a significant role. Imbalances in neurotransmitters like serotonin, dopamine, and GABA, the brain’s natural calming chemical, are associated with anxiety disorders. There is also a clear genetic component: if a parent or sibling has an anxiety disorder, your own risk is meaningfully higher.

Life Experiences

Trauma, adverse childhood experiences, chronic stress, relationship difficulties, bereavement, and major life transitions can all trigger or worsen anxiety. The nervous system learns to stay on high alert when it has experienced repeated threat, even long after the threat has passed.

Personality and Thinking Patterns

People who tend towards perfectionism, have a low tolerance for uncertainty, or habitually engage in negative self-talk are more vulnerable to anxiety. These are not character flaws; they are patterns that can be unlearned with the right support.

Environment and Lifestyle

Chronic sleep deprivation, excessive caffeine, a demanding work environment, financial stress, and social isolation all contribute to anxiety. Digital overload, meaning the constant stimulation of smartphones and social media, is also increasingly recognised as an anxiety amplifier, particularly in younger people.

Normal Anxiety vs an Anxiety Disorder

This is one of the questions I am asked most often: “Is what I’m feeling normal, or is something wrong with me?”

The honest answer is that the line between normal anxiety and a disorder is not always sharp. Here is a practical way to think about it:

If your answer to any two of those questions is yes, it is worth speaking to a professional. You do not need to be in crisis to deserve support. Anxiety that is left untreated tends to intensify over time, and the avoidance that provides short-term relief usually makes the anxiety worse in the long run.

When Is It Time to Get Help?

There is no threshold of suffering you need to reach before you are “allowed” to ask for help. But here are some clear signs that speaking to a professional should not wait:

• You are avoiding situations, people, or places because of anxiety
• Anxiety is affecting your performance at work or in your studies
• You are using alcohol, substances, or food to manage anxious feelings
• You are experiencing panic attacks, sudden, overwhelming episodes of fear
• Your sleep is consistently disrupted by anxious thoughts
• You feel anxious most days, even when nothing specific is wrong
• The people close to you have noticed a change and expressed concern
• You have started to withdraw from activities or relationships you used to enjoy

In my experience, most people who come to therapy tell me they wish they had come sooner. Anxiety is highly treatable, but the longer it is left, the more deeply it becomes embedded in daily life.

How Is Anxiety Treated?

The good news is that anxiety responds very well to treatment. Most people see meaningful improvement with the right support, and you do not have to rely on medication if that is not right for you.

Cognitive Behavioural Therapy (CBT)

CBT is the most extensively researched psychological treatment for anxiety. It works by helping you identify the thought patterns that fuel your anxiety, such as the catastrophising, the “what ifs”, and the assumptions, and gradually replace them with more realistic, balanced thinking. Most people notice a difference within 8 to 12 sessions.

Exposure Therapy

Used particularly for specific phobias, social anxiety, and OCD, exposure therapy involves gradually and safely confronting the situations or objects that trigger fear. Done properly, with a trained therapist, it is one of the most effective interventions in all of clinical psychology.

Acceptance and Commitment Therapy (ACT)

Rather than fighting anxious thoughts, ACT teaches you to observe them without being controlled by them. The goal is not to eliminate anxiety, which is impossible, but to reduce the power it holds over your behaviour and your choices.

Medication

In some cases, medication can be a helpful part of treatment, particularly when anxiety is severe. SSRIs (selective serotonin reuptake inhibitors) are commonly prescribed. They are not a cure, and they work best in combination with therapy, but for many people they create enough stability to do the deeper therapeutic work.

Lifestyle Changes That Make a Real Difference

Regular physical exercise, consistent sleep, reduced caffeine, mindfulness practice, and strong social support all have solid evidence behind them. These are not substitutes for professional help, but they are powerful complements to it.

Your First Step

If you have read this far, something in this article probably resonated with you. Maybe you recognised yourself in the symptom list. Maybe you have been wondering for a while whether what you are feeling is “bad enough” to do something about.

Here is what I want you to know: it is. And you do not have to figure it out alone.

The first session with a therapist is not a commitment to anything. It is simply a conversation. You talk, we listen, and together we work out what is going on and what might help. That is it. Many of my clients tell me that just having that first session, just saying out loud what they have been carrying, is itself a relief.

If you are ready to take that step, we are here.

Not sure if what you’re feeling is anxiety? Take our free Anxiety Self-Evaluation →

Related:

• Am I Depressed or Just Sad? How to Tell the Difference
• Anxiety vs Stress: What’s the Difference and Why It Matters
• 10 Common Myths About Online Therapy