You must urgently consult a doctor or go to an ER. This could be related to a serious heart, kidney or liver problem. The other possibility is a too low blood pressure, which may be related to the above mentioned problems. The swollen veins can be due to venous pooling due to low blood pressure or due to some other cause or may even be related to atherosclerosis etc. Please urgently consult a doctor. Take care!
The medical advice given should not be considered a substitute for medical care provided by a doctor who can examine you. The advice may not be completely correct for you as the doctor cannot examine you and does not know your complete medical history. Hence this reply to your post should only be considered as a guiding line and you must consult your doctor at the earliest for your medical problem.
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