Why it starts, and what it's doing to your body.
If you're anxious right now, please don't read this yet. Go to Instant help first — explanations are hard to take in mid-panic, and there is no rush. This will still be here afterwards.
The short version: your body's alarm system is switching on when there is no real danger. Nothing is broken, and nothing is wrong with you. Everything below is that one fact, explained.
Anxiety rarely has one single cause. Usually a few of these stack up quietly until your alarm system is already half switched on, and then something small tips it over. Seeing your own reasons written down often explains a great deal.
And sometimes there is no reason you can find at all — it arrives out of a perfectly ordinary Tuesday. That is common, it does not mean it is worse, and it does not mean you have missed something.
When your brain senses danger it floods you with adrenaline to get you ready to run or fight. Every symptom below is that preparation. Not damage — readiness, at the wrong moment.
Racing or pounding heart
Blood is being pumped faster to your big muscles so you could run. Your heart is built for this and is not straining.
Can't get a full breath
You are breathing faster and shallower to take in more oxygen. It feels like suffocating even though you have more oxygen than usual, not less.
Dizzy, light-headed, unreal
Fast breathing lowers the carbon dioxide in your blood, which narrows the vessels to your brain slightly. Harmless, and it reverses as soon as your breathing slows.
Tingling in hands, face or lips
The same cause. It is the most alarming-feeling symptom and one of the most harmless.
Chest tightness
The muscles around your ribs tighten up. This is a very common part of anxiety, and the tightness is real — not imagined.
Please never assume chest pain is "just anxiety". Chest pain can also come from your heart, and nothing on this website — and no test you can do on yourself — can tell the two apart. Please see a doctor about any chest pain. And if it is severe or crushing, spreading to your arm, neck or jaw, or comes with sweating, breathlessness or feeling faint — treat it as an emergency and get medical help immediately. It is always better to be checked and told it was anxiety.
Churning stomach, needing the toilet
Digestion shuts down in an emergency to free up energy. Your gut has its own dense network of nerves, which is why anxiety is felt there so strongly.
Sweating, then chills
Your body is cooling itself in advance for effort it expects. The chill comes afterwards, as it overshoots.
Shaking or trembling
Your muscles are loaded with energy and ready to move. The shaking is the overflow.
Feeling detached, like watching yourself
A normal protective response to very high alarm. Frightening, extremely common, and temporary.
Can't think straight
Energy is pulled away from the slow, reasoning part of your brain toward fast reflexes. This is why logic stops working mid-panic. It is not you failing.
Not one of these is a sign of damage. They are all the correct output of a system that fired at the wrong moment. A panic attack cannot hurt your heart, and it cannot make you lose your mind — those two fears are almost universal, and both are unfounded.
Everyone feels anxious sometimes. What turns it into something bigger is a loop:
A thought, a place, too much coffee, a bad night — or nothing you can name.
Heart speeds up, chest tightens, breathing changes.
"Something is really wrong with me." This is the step where ordinary anxiety turns into panic.
Now your brain has evidence of a threat — and the threat is your own body. Everything intensifies.
Instant relief. And your brain records that escaping is what saved you, so next time starts higher.
The good news hiding in that list: it is a loop, which means it can be interrupted at any point. That is all the techniques on this site are doing — breathing and grounding work on steps 2 and 3, and going back to things slowly works on step 5.
Most people don't fit neatly into one of these, and you don't need a label to deserve help. This is only here in case you recognise yourself.
Constant low-level worry spread across everything — work, health, money, family, small logistics. Often with restlessness, tense muscles, broken sleep and permanent tiredness. People describe it as never quite being able to relax, rather than having distinct attacks.
A sudden wave of intense fear that peaks in about ten minutes — pounding heart, breathlessness, chest tightness, a sense of impending doom. Many people's first one sends them to a hospital, which is an entirely sensible thing to do. What often follows is a fear of the next attack, and that fear is usually the bigger problem.
Dread of embarrassment in front of others — rehearsing conversations beforehand and replaying them for hours afterwards. It is far more than shyness, and it quietly shapes which jobs, friendships and chances a person allows themselves.
Flying, heights, needles, dogs, lifts, being sick. The fear is out of proportion to the actual risk and you usually know it, which does not help at all. These respond very well to going back slowly, often quite quickly.
Being preoccupied with the idea of having something seriously wrong. Checking your body, searching symptoms, asking for reassurance — each of which helps for an hour and strengthens the worry over months. Anxiety's own physical symptoms make it especially self-feeding.
Avoiding crowds, transport, queues, or being far from home — anywhere escape would be hard. This usually grows out of panic attacks rather than starting on its own, one avoided place at a time.
Worth knowing: anxiety is one of the most common health conditions in the world — hundreds of millions of people are living with it, most of them quietly. You are in very large company.
It is also one of the most treatable. This is not something you are stuck with.