Hi, thanks for writing to HCM.Varicose veins
are not caused by parasitic infections. They develop due to the presence of incompetent valves in the veins. Normally the valves should act like "ball valve" which should prevent back flow of blood. In case of incompetent valves, the blood that is pumped up will come down again and gets pooled up leading to varicosities.
I personally feel that varicose veins and lower back pain
are no way related.
Hope this information is helpful. Good day