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7 Heart Valve Disease Symptoms That Are Easy to Miss

May 28, 2026

Maybe you feel winded walking up the stairs. Or maybe you’re more tired than usual. At first, it’s easy to just blame stress, poor sleep or being out of shape.

“It’s easy to brush off subtle symptoms like this,” says Sarfaraz Memon, MD, an interventional cardiologist with Hartford HealthCare Heart & Vascular Institute at Hartford Hospital. “But if they keep showing up, or start getting worse, your heart may be trying to tell you something.”

Heart valve disease happens when one or more of the heart’s valves don’t open or close the way they should, affecting how blood flows through the heart.

The challenge is that symptoms don’t always appear all at once, and they can be easy to miss early on. Here’s what to look out for.

1. Shortness of breath

This is often one of the first symptoms people notice, especially during activity.

You might feel winded climbing stairs, walking across a parking lot or doing something that used to feel easy. Some people also notice shortness of breath when lying flat, or they may wake up at night feeling like they need to sit up to catch their breath.

“This can be an early sign that blood isn’t moving through the heart as efficiently as it should,” says Dr. Memon.

> Related: 7 Heart Disease Symptoms You Shouldn’t Ignore

2. Fatigue

Everyone feels tired sometimes. But fatigue from heart valve disease can feel different.

You may feel unusually worn out after basic tasks, like grocery shopping, walking the dog or getting ready in the morning. Or you may notice that activities you used to handle without much thought now leave you needing a break.

“Patients often describe feeling unusually tired, even with minimal activity,” says Dr. Memon.

> Related: Why Heart Problems Are More Common As You Get Older

3. Chest pain or pressure

Chest discomfort can happen when your heart is working harder than normal.

It may feel like pain, tightness, heaviness or pressure in the chest. For some people, it happens during exercise or activity. For others, it may show up even at rest.

“It can show up during activity or even when you’re resting,” says Dr. Memon. “Any new or worsening chest discomfort should always be taken seriously.”

> Related: What Heart Attacks Look Like in Women

4. Irregular heartbeat or palpitations

Do you ever feel like your heart is racing, fluttering or skipping beats?

That sensation is called a palpitation, and it can feel unsettling. You may notice it when you’re resting, lying down or after activity. Some people describe it as a pounding heartbeat, while others feel like their heart is briefly out of rhythm.

“These rhythm changes are common with valve problems and can be a sign the heart is working harder than it should,” explains Dr. Memon.

> Related: 4 Signs Your Heart Isn’t Beating The Way It Should

5. Swelling in your legs or abdomen

If blood flow is disrupted, fluid can start to build up in your body.

You may notice swelling in your ankles, feet, legs or abdomen. Shoes may feel tighter than usual, socks may leave deeper marks or your lower legs may look puffier by the end of the day.

“If you’re noticing swelling in your ankles, legs or abdomen, it’s another clue,” says Dr. Memon. “Your heart may not be moving blood forward effectively.”

6. Dizziness or fainting

Feeling lightheaded, especially during activity, can be a sign that less blood is reaching your brain.

You might feel unsteady, weak or like you need to sit down quickly. In some cases, heart valve disease can cause fainting, especially if the valve problem is affecting blood flow during exertion.

“Fainting is more serious, and we’ll want to evaluate you right away,” says Dr. Memon.

> Related: 5 Heart-Healthy Exercises to Do Today

7. A persistent cough or wheezing

This one may surprise you.

A cough or wheeze might seem like a lung problem, allergies or a lingering cold. But in some cases, it can be connected to the heart.

“Sometimes symptoms show up in ways you wouldn’t expect,” says Dr. Memon. “A lingering cough or wheeze may be related to fluid buildup in the lungs from heart valve dysfunction.”

> Related: 7 Easy Ways to Protect Your Heart as You Age

When to see your doctor

Symptoms of heart valve disease don’t always appear suddenly, but they can develop gradually over time.

“Paying attention to changes in how you feel can help catch problems early and get you the care you need,” says Dr. Memon. “If symptoms are severe, such as chest pain or sudden shortness of breath, seek care right away.”