is an abnormal enlargement of the vein that is in the scrotum
draining the testicles. Upward flow of blood in the veins is ensured by small one-way valves that prevent backflow. Defective valves, or compression of the vein by a nearby structure, can cause dilatation of the veins near the testis, leading to the formation of a varicocele. Since there is a structural problem (defective valves, compression), oral medications are not known to help as it is important to correct the problem. Hence surgery is the best option for conditions like varicocele.
Feel free to write back in case of queries...