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Hello and welcome to JA. Dr Saleem here. Will be answering you shortly
How often do you get them ? Do you lose consciousness or its just you feel like fainting ?
Does it always happen while being upright or standing or it also sometimes happens while sitting ?
Do you experience any palpitations or irregular heart rhythm too ?
How has you blood pressure, cholesterol and sugar level been of late?
Any tests done recently ? EkG , echocardiogram , doppler on your neck vessels, fasting sugar & cholesterol levels etc ?