Atrial Fibrillation — one of the most common
forms of abnormal heart rhythm — is caused by these waves, and is a major cause of stroke as it increases the risk of blood clots forming inside the heart.
The most common symptom will be a lump under the skin, visible bleeding, sometimes in the
form of nosebleeds, tiring easily, episodes
of unexplained weakness, pale color in the gums, difficulty breathing, abdominal swelling, seizures,
abnormal heart rhythms, collapse, and depression.