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2. What Is Heart Disease? Everything You Need to Know - AOL

   www.aol.com/heart-disease-everything-know...

   Arrhythmias can sometimes cause relatively mild symptoms like palpitations, irregular heartbeats, or lightheadedness. ... The causes of heart disease depend on the type you have. For instance ...

3. 6 signs you're about to pass out and why it happens - AOL

   www.aol.com/news/6-signs-youre-pass-why...

   This can cause lightheadedness in some people. In postural orthostatic tachycardia syndrome (POTS), the lightheadedness also comes with a rapid increase in heartbeat. ... Heart rhythm problems ...

4. Is It Normal to Feel Lightheaded Every Day? - AOL

   www.aol.com/normal-feel-lightheaded-every-day...

   The reason why dehydration can cause lightheadedness is because it can lead to reduced ... have a history of stroke or have an underlying heart problem—you should also see a doctor immediately ...

5. Lightheadedness - Wikipedia

   en.wikipedia.org/wiki/Lightheadedness

   Lightheadedness often accompanies the flu, hypoglycaemia, common cold, or allergies. Dizziness could be provoked by the use of antihistamine drugs, like levocetirizine, or by some antibiotics or SSRIs. Nicotine or tobacco products can cause lightheadedness for inexperienced users. Narcotic drugs, such as codeine, can also cause lightheadedness.

6. Syncope (medicine) - Wikipedia

   en.wikipedia.org/wiki/Syncope_(medicine)

   [1] [3] Issues with the heart and blood vessels are the cause in about 10% and typically the most serious while neurally mediated is the most common. [1] Heart related causes may include an abnormal heart rhythm, problems with the heart valves or heart muscle and blockages of blood vessels from a pulmonary embolism or aortic dissection among ...

7. Coronary occlusion - Wikipedia

   en.wikipedia.org/wiki/Coronary_occlusion

   Symptoms include chest pain or angina, shortness of breath, and fatigue. [6]A completely blocked coronary artery will cause a heart attack. [6] Common heart attack symptoms include chest pain or angina, pain or discomfort that spreads to the shoulder, arm, back, neck jaw, teeth or the upper belly, cold sweats, fatigue, heartburn, nausea, shortness of breath, or lightheadedness.