cardiac doctors near me Heart disease symptoms include chest pain or discomfort (angina), shortness of breath, pain in the neck, jaw, back, or limbs, and extreme fatigue. Other warning signs are dizziness, lightheadedness, nausea, cold sweats, and swelling in the legs, ankles, or feet. Symptoms may be absent until a heart attack occurs. Key Heart Disease Symptoms: Chest Discomfort: Pain, tightness, pressure, or burning in the chest (angina). Shortness of Breath: Feeling out of breath, even with mild activity or at rest. Pain Elsewhere: Discomfort spreading to the arms (especially the left), neck, jaw, back, or stomach. Physical Changes: Unexplained, extreme fatigue, sudden sweating, and dizziness or fainting. Swelling: Swelling in the ankles, feet, legs, or abdomen (edema). Heart Rhythm Issues: Fluttering in the chest or a racing/slow heart rate .