Anxiety and heart problems share chest tightness, racing heart, breathlessness, and dizziness, and the honest rule is: first severe episode or exertion-triggered symptoms get evaluated, because an ECG settling it is legitimate medicine.
Pattern clues leaning panic: peak within 10 minutes, gone within 30, striking at rest or from sleep, with tingling hands, air hunger, and a sense of doom, recurring as recognizable episodes. Leaning cardiac: pressure or squeezing discomfort triggered by exertion and easing with rest, radiating to the arm, jaw, or back, with nausea or cold sweat, in someone with cardiac risk factors. Neither is airtight: women and diabetics present atypically, and panic can coexist with real heart disease. After a cardiac rule-out, panic is very treatable with CBT and SSRIs, and the reassurance itself is therapeutic. For recurrent episodes, track trigger, duration, and what relieves it; that log shortens the diagnostic path considerably.
What to do
Common questions
Is it anxiety or a heart problem?
Anxiety and heart problems share the same symptom wardrobe: chest tightness, racing heart, shortness of breath, sweating, dizziness, tingling. That overlap is exactly why panic attacks send people to the ER, and why the answer to "which is this" is sometimes "get checked and let an ECG decide," which is legitimate medicine, not overreaction. The pattern clues that lean panic: symptoms peak within about 10 minutes and fade within 20 to 30; they strike at rest, including from sleep; they come with tingling in the hands and around the mouth, a sense of unreality or doom, and air hunger that feels like you cannot get a deep breath; and they recur in recognizable episodes, per MedlinePlus's panic disorder criteria. The clues that lean cardiac: pressure or squeezing (rather than sharp or stabbing) chest discomfort triggered by exertion and easing with rest; radiation to the left arm, jaw, or back; nausea or cold sweat; symptoms that build rather than peak-and-pass; and risk context (age, smoking, diabetes, high blood pressure, high cholesterol, family history). Neither set is perfect: women and diabetics get atypical cardiac symptoms, and panic can strike people with real heart disease too. The practical rule: first-ever severe chest symptoms, or symptoms with exertion, radiation, or fainting, get same-day medical evaluation; once heart causes are ruled out, panic attacks are very treatable (CBT and SSRIs both work), and knowing your heart is fine is itself part of the treatment. And if episodes are recurrent, tracking triggers, duration, and what relieves them gives the clinician the fastest path to the right answer.