Varicose vein near ankle
The specific vein you are talking about just above the inside ankle bone is the great saphenous vein which may be quite prominent in some individuals and normal in most. Take a look at the ankles of most young people, they all have this vein just over the medial (inside) ankle bone. Yours may be very prominent.
Endovenous procedures are not performed for this particular problem unless venous reflux extends all the way down here from the groin, called saphenofemoral venous reflux disease...