- breathing when lying down
- Sudden weight gain from fluid retention
- Reduced ability to perform everyday activities
A heart attack can develop suddenly, although symptoms can sometimes begin gradually or be relatively mild.
Understanding the difference helps prevent unnecessary panic while still taking genuine warning signs seriously.
What About Foot Swelling in the Image?
The foot shown in the graphic may be intended to represent swelling.
Swollen feet can occur in heart failure, but foot swelling alone cannot diagnose heart disease.
For example, someone who spends all day standing may develop
