10 Signs of an Anxiety Attack and What's Really Causing Them
Learn what causes anxiety attacks, the 10 warning signs to watch for, and how to stop an anxiety attack fast and safely.
TL;DR
The signs of an anxiety attack include a racing heart, shortness of breath, chest tightness, dizziness, and a sudden sense of dread, often peaking within 10 minutes.
What causes anxiety attacks varies by person: genetics, chronic stress, trauma, brain chemistry, and medical conditions all play a part [1].
Alcohol and drug use can trigger anxiety attacks or make them worse, especially during withdrawal [2] [3].
Knowing how to stop an anxiety attack in the moment, through slow breathing and grounding, can shorten the episode and reduce fear of the next one.
If anxiety attacks happen often or alongside substance use, professional treatment is the safest path forward. Greater Texas Behavioral offers care built for exactly this.
Table of Contents
Introduction
Your heart is pounding, your hands are shaking, and you can't catch your breath. Maybe you feel like something terrible is about to happen, even though nothing around you has changed. If this sounds familiar, you're not alone, and you're not broken. Millions of people experience the signs of an anxiety attack every year, and most of them ask the same question afterward: what actually caused that?
This article walks through the 10 most common signs of an anxiety attack, explains what causes anxiety attacks at a biological and situational level, and gives you real steps for how to stop an anxiety attack when it hits. It also covers something that often gets left out of this conversation: the connection between anxiety and substance use, and when it's time to get professional help.
What is an anxiety attack? Understanding the basics
An anxiety attack isn't a formal medical term, though people use it constantly. Clinically, what most people describe matches what the Diagnostic and Statistical Manual of Mental Disorders (DSM-5-TR) calls a panic attack: a sudden surge of intense fear or discomfort that peaks within minutes and comes with a specific list of physical and mental symptoms [1]. The DSM-5-TR, published by the American Psychiatric Association, is the manual clinicians use nationwide to diagnose anxiety and panic disorders, and it lays out the criteria in detail [1].
In everyday language, "anxiety attack" often covers a broader range: a slower build of dread, worry, or physical tension that doesn't spike as sharply as a textbook panic attack but still feels overwhelming. Both versions are real, and both deserve attention. The signs of an anxiety attack, whether sudden or gradual, are your body's alarm system firing when it senses a threat, even if that threat isn't physical danger.
10 common signs of an anxiety attack
Recognizing the signs of an anxiety attack early can help you respond faster and feel less afraid of what's happening to your body. Here are the 10 that show up most often.
Racing or pounding heart: often the first thing people notice, and the one that scares them most.
Shortness of breath or a feeling of choking: your chest feels tight, like you can't get a full breath in.
Sweating: sudden, often for no clear reason tied to temperature or activity.
Trembling or shaking: in your hands, legs, or your whole body.
Chest pain or discomfort: a common reason people go to the emergency room, mistaking it for a heart attack.
Nausea or stomach distress: anxiety hits the gut as hard as it hits the chest.
Dizziness or lightheadedness: a feeling like you might faint or lose balance.
Chills or hot flashes: sudden temperature swings with no external cause.
Numbness or tingling: usually in the hands, feet, or face.
A sense of unreality or losing control: feeling detached from yourself or your surroundings, or fearing you're "going crazy" or about to die.
Symptom type | Examples |
|---|---|
Physical | Racing heart, sweating, trembling, chest pain, dizziness, numbness |
Cognitive/emotional | Fear of dying, sense of unreality, feeling out of control, dread |
What causes anxiety attacks: the root triggers
People want a single answer to what causes anxiety attacks, but the honest answer is that it's usually several things layered on top of each other. Understanding what causes anxiety attacks for you specifically is part of what makes treatment work.
Genetics and brain chemistry: anxiety disorders run in families, and imbalances in neurotransmitters like serotonin and norepinephrine affect how the brain processes fear signals.
Chronic stress: ongoing pressure from work, finances, or relationships keeps your nervous system on high alert, lowering the threshold for an attack.
Past trauma: a history of abuse, loss, or a frightening event can leave the brain primed to react strongly to reminders, even small ones.
Medical conditions: thyroid problems, heart arrhythmias, and respiratory conditions can all produce or mimic anxiety symptoms.
Life transitions: big changes, even good ones like a new job or a move, put strain on your sense of stability.
Caffeine and sleep deprivation: both push your body into a physiological state that closely resembles anxiety.
The DSM-5-TR notes that panic attacks can occur as part of an anxiety disorder or on their own, unattached to any diagnosed condition [1]. That means you don't need a formal diagnosis for your experience to be real or worth addressing. If you're trying to figure out what's driving your symptoms, resources through SAMHSA can connect you to a professional who can help sort it out [4].
The link between substance use and anxiety attacks
This is the piece that often gets missed. Alcohol and drugs don't just coexist with anxiety. They actively shape it, and sometimes cause the very attacks a person is trying to escape.
Alcohol depresses the central nervous system in the short term, but as it wears off, the brain overcorrects, producing rebound anxiety that can feel like a full-blown attack. The National Institute on Alcohol Abuse and Alcoholism (NIAAA) studies exactly this kind of effect on the brain and body, including how repeated drinking changes the stress-response systems tied to anxiety [2]. Over time, this can create a cycle: drink to calm anxiety, then experience worse anxiety as the alcohol leaves your system, then drink again to cope.
Stimulants like cocaine and methamphetamine, along with withdrawal from opioids or benzodiazepines, are also well documented triggers for panic-like symptoms. The National Institute on Drug Abuse (NIDA) tracks how various substances affect the brain's fear and reward circuits, and that research consistently points to substance use as both a trigger and a complicating factor for anxiety attacks [3]. When anxiety and substance use disorder occur together, they're called co-occurring disorders, and the American Society of Addiction Medicine (ASAM) builds its treatment guidelines specifically around addressing both at once rather than treating one and ignoring the other [5].
Substance | Common anxiety connection |
|---|---|
Alcohol | Rebound anxiety during withdrawal or "hangxiety" |
Stimulants (cocaine, meth) | Direct trigger for panic-like symptoms during use |
Benzodiazepines | Severe rebound anxiety and panic during withdrawal |
Caffeine | Mimics and worsens physical anxiety symptoms |
How to stop an anxiety attack in the moment
When you're in the middle of it, you don't need theory, you need something that works right now. Here's how to stop an anxiety attack once it starts.
Slow your breathing: inhale for four counts, hold for four, exhale for six. Longer exhales signal your nervous system to calm down.
Name what you see: five things you can see, four you can touch, three you can hear. This grounding technique pulls your brain out of the fear loop.
Say it out loud: "This is anxiety. It will pass. I am not in danger." Naming the experience reduces its power.
Cool your face or hands: cold water or an ice pack can interrupt the body's panic response.
Don't fight it: trying to force the attack to stop often makes it last longer. Let the wave move through you.
Most panic-level anxiety attacks peak within 10 minutes and ease within 20 to 30. Knowing that timeline in advance makes the experience less frightening while it's happening.
Long-term strategies to prevent future anxiety attacks
Stopping one attack is different from preventing the next ten. Long-term change usually comes from a combination of approaches, not one fix.
Cognitive behavioral therapy (CBT): helps identify and reshape the thought patterns that fuel anxiety before it builds into an attack.
Consistent sleep and reduced caffeine: both lower your baseline nervous system activity.
Regular movement: even walking daily changes how your body metabolizes stress hormones.
Addressing substance use directly: if alcohol or drugs are part of the cycle, treating anxiety alone won't hold.
Structured outpatient support: for many people, a more consistent level of care makes the difference between managing symptoms and actually reducing them.
If your schedule or location makes in-person care difficult, our guide on how virtual IOP works in Texas explains what online intensive outpatient treatment looks like day to day, and our piece on signs a virtual IOP might be right for you can help you decide if that structure fits your situation.
When to seek professional help for anxiety and co-occurring disorders
Occasional anxiety is part of being human. But if the signs of an anxiety attack are showing up weekly, disrupting your work or relationships, or tangled up with drinking or drug use, it's time to bring in professional support. ASAM's treatment criteria are built specifically around cases where anxiety and substance use overlap, because treating them separately rarely produces lasting results [5].
SAMHSA's national helpline and treatment locator are free, confidential ways to find a starting point if you're not sure where to go [4]. At Greater Texas Behavioral, we treat anxiety and substance use together, through outpatient and virtual programs designed for people who need real structure without stepping away from their jobs or families. If you're ready to talk to someone, that conversation is the first real step.
Frequently asked questions
Q: What causes anxiety attacks to happen suddenly?
A: Sudden anxiety attacks are usually triggered by a spike in the body's stress response, sometimes from an identifiable trigger like a stressful thought or memory, and sometimes with no clear cause at all. Genetics, chronic stress, sleep loss, and caffeine all lower the threshold, so an attack can seem to come out of nowhere even when the buildup has been happening for days [1].
Q: What are the most common signs of an anxiety attack?
A: The most common signs of an anxiety attack are a racing heart, shortness of breath, sweating, trembling, chest tightness, dizziness, and a sudden wave of fear or dread, often peaking within 10 minutes [1].
Q: How do I stop an anxiety attack quickly and safely?
A: Slow, deep breathing with a longer exhale, grounding techniques like naming things you can see and touch, and reminding yourself the sensation will pass within minutes are the fastest ways to stop an anxiety attack in the moment.
Q: Can substance abuse cause or worsen anxiety attacks?
A: Yes. Alcohol withdrawal, stimulant use, and withdrawal from benzodiazepines or opioids are all documented triggers for panic-like symptoms, and ongoing substance use tends to worsen anxiety over time [2] [3].
Q: When should I seek professional treatment for anxiety attacks?
A: If anxiety attacks are frequent, interfering with daily life, or connected to drinking or drug use, it's time for professional treatment. ASAM's guidelines recommend addressing anxiety and substance use together rather than separately [5].
Conclusion
The signs of an anxiety attack can feel like your body is betraying you, but they're your nervous system doing exactly what it's built to do, just at the wrong time or with too much intensity. Understanding what causes anxiety attacks, whether that's genetics, stress, trauma, or substance use, gives you something to work with instead of just something to fear. And knowing how to stop an anxiety attack when it hits gives you back a sense of control that anxiety tries to take away.
If anxiety attacks are becoming a regular part of your life, or if you suspect alcohol or drugs are tangled up in the picture, Greater Texas Behavioral is here to help you sort through it with a real plan, not just advice. Reach out and let's talk about what treatment could look like for you.
References
American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders (DSM-5-TR). - https://www.psychiatry.org/psychiatrists/practice/dsm
National Institute on Alcohol Abuse and Alcoholism (NIAAA). - https://www.niaaa.nih.gov
National Institute on Drug Abuse (NIDA). - https://nida.nih.gov
SAMHSA. Substance Abuse and Mental Health Services Administration. - https://www.samhsa.gov
American Society of Addiction Medicine (ASAM). - https://www.asam.org
