fluid.
One of the most noticeable signs is swelling, known as **edema**, especially around the:
* Feet
* Ankles
* Lower legs
Shoes may suddenly feel tighter, sock marks may become deeper, or the ankles may look noticeably puffier by the end of the day.
Fluid may also accumulate in the abdomen or other tissues.
Swelling has many possible causes, so it does not automatically mean heart failure. Persistent or worsening swelling should nevertheless be evaluated.
## 4. Unusual Fatigue and Weakness
Feeling tired occasionally is normal.
Heart-failure fatigue is more concerning when ordinary
