An anxiety attack feels like your body has hit a panic button you didn’t press. Your heart pounds, your chest tightens, your breathing gets shallow and fast, and you may feel an overwhelming sense that something terrible is about to happen. The whole experience typically peaks within 10 minutes, but those minutes can feel much longer, and the aftereffects can linger for hours or even days.
What Happens in Your Body
The physical sensations are often the most alarming part, because they mimic serious medical emergencies. Your heart races and pounds hard enough that you can feel it in your chest, neck, or throat. Many people experience chest pain or tightness, which is why anxiety attacks are frequently mistaken for heart attacks. You may feel short of breath or like your throat is closing, even though your airway is fine.
Beyond those core sensations, the body can produce a wide range of symptoms: sweating, trembling or shaking, nausea, stomach cramping, dizziness or lightheadedness, chills, hot flashes, headache, and tingling or numbness in your hands, feet, or face. Not everyone gets the same combination. Some people feel mostly cardiovascular symptoms, while others are hit hardest by nausea or dizziness. The specific mix can even change from one episode to the next.
Why Your Body Reacts This Way
All of these sensations trace back to your brain’s threat detection system firing when there’s no actual danger present. A region deep in the brain sends a distress signal to the hypothalamus, which activates your sympathetic nervous system, the same network that would prepare you to fight or flee a physical threat. Your adrenal glands pump adrenaline into your bloodstream, and that single hormone is responsible for most of what you feel: the racing heart, the rapid breathing, the surge of blood to your muscles.
If the brain keeps perceiving danger, a second wave kicks in. A hormonal chain releases cortisol, which keeps the “gas pedal” of the stress response pressed down. This is why an anxiety attack doesn’t always stop the moment you recognize what’s happening. Your body has committed to a chemical process that takes time to wind down, even after the psychological trigger has passed.
The Mental and Sensory Experience
The psychological side of an anxiety attack can be just as distressing as the physical symptoms. Many people describe an intense feeling of impending doom, a deep certainty that something catastrophic is happening right now. You might feel detached from your own body, as if you’re watching yourself from the outside, or the world around you might seem unreal, dreamlike, or distant. A fear of losing control or “going crazy” is extremely common.
Your senses can shift too. Extreme anxiety can temporarily narrow your peripheral vision, creating a tunnel vision effect where you can only see what’s directly in front of you. Objects and people may appear slightly blurry. Hyperventilation, which often accompanies these episodes, throws off the balance of oxygen and carbon dioxide in your blood, and that imbalance contributes to both the visual changes and the tingling sensations in your extremities. Some people also report that sounds seem louder or more jarring than usual.
How Long It Lasts
A single episode usually peaks within 10 minutes of starting, sometimes faster. From there, the intensity gradually drops, though some residual symptoms can stick around for 20 to 30 minutes. In some cases, multiple attacks of varying intensity roll into each other over several hours, which can feel like one long, unrelenting episode. Shorter, milder episodes sometimes last only one to five minutes but can still leave you shaken.
The Aftermath
What many people don’t expect is how they feel after the attack is over. That intense burst of adrenaline and cortisol burns through your body’s energy reserves, and once the chemicals clear, you’re left drained. Fatigue and exhaustion are the most common aftereffects, sometimes lasting the rest of the day. Muscle soreness is also typical, because your body was tensed and trembling during the episode even if you didn’t notice it at the time.
Lingering symptoms can include feeling “on edge,” mild chest discomfort, trouble sleeping that night, and a general sense of vulnerability. Some people feel embarrassed or ashamed afterward, especially if the attack happened in public or seemed to come out of nowhere. These emotional aftereffects can last hours or, in some cases, a day or two. It’s sometimes called a “panic attack hangover,” and it’s a normal part of the recovery process, not a sign that something worse is happening.
Anxiety Attack vs. Panic Attack
“Anxiety attack” is actually an informal term. It doesn’t appear in the clinical manual used to diagnose mental health conditions. “Panic attack” is the recognized medical term, and it refers to intense, sudden episodes of fear and physical distress that often strike without warning. In everyday conversation, people use “anxiety attack” to describe a broader range of experiences, from a slow buildup of overwhelming worry to a full-blown panic episode.
The practical distinction most people mean when they separate the two: anxiety tends to build gradually in response to a specific stressor, while panic attacks often hit suddenly and without an obvious trigger. A person might spend hours feeling increasingly anxious about a work deadline, with symptoms intensifying over time. A panic attack, by contrast, can strike while you’re watching television or even waking from sleep. The physical symptoms overlap heavily, but the onset pattern and intensity are what set them apart. If your episodes come on abruptly and peak fast, what you’re experiencing likely fits the clinical definition of a panic attack, even if you’ve been calling it an anxiety attack.