Mayo Clinic Health Manager
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By Mayo Clinic staffMake an appointment to see your doctor if self-care measures aren't helping your pain or if your pain is worsening.
Costochondritis pain is often mistaken for heart attack pain. The pain of a heart attack is often more widespread, while costochondritis pain is focused on a small area. Heart attack pain usually feels as if it's coming from under your breastbone, while costochondritis pain seems to come from the breastbone itself. Heart attack pain may worsen with physical activity or stress, while the pain of costochondritis remains constant.
Don't waste time, though, trying to distinguish between the two if you're experiencing unexplained and persistent chest pain. Chest pain is an emergency — seek medical attention right away.