Symptoms & Red Flags: When the Heart Is Asking for Help
Learn the most common warning signs—and how to recognize urgent situations.
Symptoms Can Be Loud… or Quiet
Some heart problems announce themselves dramatically. Others are subtle and build slowly. The goal is to recognize patterns early, especially symptoms linked to exertion, breathing, and circulation.
Common Symptoms
Chest Discomfort
Often described as pressure, tightness, squeezing, or heaviness. It may spread to the arm, jaw, neck, or back.
Shortness of Breath
Can appear with activity, when lying flat, or at night. Often seen in heart failure.
Palpitations
Feeling like the heart is racing, fluttering, skipping, or pounding.
Swelling (Edema)
Fluid buildup in legs/ankles can signal heart failure or circulation problems.
Dizziness or Fainting
Can be linked to rhythm problems or low blood pressure.
Unusual Fatigue
Persistent exhaustion that doesn’t match activity level can be a subtle warning sign.
Atypical Symptoms (Yes, This Matters)
Some people experience “non-classic” symptoms like nausea, indigestion-like discomfort, sweating, or just feeling unwell. Heart disease can also be silent, especially with diabetes.
Clinical Thinking (Beginner)
If symptoms are triggered by exertion and improve with rest, clinicians become more suspicious of heart-related causes.
Emergency Red Flags
- Chest pressure with sweating, nausea, or shortness of breath
- Severe shortness of breath at rest
- Fainting or near-fainting with heart symptoms
- Stroke-like symptoms (face droop, arm weakness, speech trouble)
- New, sudden weakness with a fast or irregular pulse
Safety Note
If someone has severe symptoms that suggest a heart attack or stroke, treat it as an emergency. In real life: activate emergency response systems immediately.
Mini Check (2 minutes)
- Q: Name two common heart-related symptoms.
A: Chest discomfort, shortness of breath, palpitations, swelling, dizziness. - Q: What symptom pattern raises suspicion for CAD?
A: Exertional symptoms that improve with rest. - Q: Name one emergency red flag.
A: Severe chest pressure, severe SOB at rest, fainting, stroke-like symptoms.