Hi,
There are several possible causes for the symptoms you experienced. One possible cause is a
vasovagal response, which is a reflex response that can occur when the body reacts to certain triggers, such as pain, fear, or emotional stress. This can cause a sudden drop in blood pressure and a decrease in blood flow to the brain, leading to symptoms such as
dizziness,
lightheadedness, and blacking out. The pressure on your neck may have been a result of muscle tension or spasm that occurred as a result of the episode.
Another possible cause could be related to your cardiovascular system. The PVCs you experienced could be indicative of
arrhythmia, or abnormal heart rhythm, which can cause symptoms such as dizziness, lightheadedness, and blacking out. This can be caused by a variety of factors, including
heart disease, electrolyte imbalances, and medication side effects.
Other potential causes could include a neurological issue such as a
migraine or seizure, or even an issue with your eyes or
visual system. It is important to follow up with your healthcare provider to discuss your symptoms and undergo appropriate testing or evaluation to determine the cause and appropriate treatment.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Priyanka, General & Family Physician