It isn't always as obvious as a heart attack.
Sometimes, getting short of breath at the top of the stairs is a sign that you need to up your workouts or
take your allergy meds. Other times, it's a sign of heart disease, says
Steinbaum. “It’s all about oxygen delivery," she says, explaining that,
in people with heart disease, the heart struggles to get oxygen where
it needs to go throughout the body. The result: you feel like you can't
ever quite catch your breath.
As heart disease progresses, breathing problems can worsen to the
point that lying flat in bed isn't even an option; it too severely
limits what air flow they do have, she says. If you struggle with
shortness or breath that isn't treated with allergy medications or other
doctor-recommended measures, it's time for a second opinion.