I've been suffering from these episode since I was 15 years old, which was directly right after removal of my appendix. The episodes are rare, sometimes it subsides by its own, but sometimes it can really lasts up to 2-3 hours. During these episodes, initially it felt like my heart just skipped a beat, and suddenly it starts to beat really fast, and the feeling of light syncope is usually there. Then, palpitations, shortness of breath, difficulty in breathing, tightening of the chest, lighheadedness, numbness, cold sweats starts to manifest. I tried to hold my breath, and breath out slowly but it doesn't go away, instead it starts to beat faster.
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