Is enlarged hand vein removal safe? Any side effects in the future or blood clots? (Photo)

I have enlarged hand veins ever since I was in middle school. I’ve been considering sclerotherapy or phlebectomy for awhile now. What are the dangers and side effects in the future? Is a blood clot possible down the road? Death? Could I end up with even more enlarged veins after the treated ones collapse? Seems scary to remove veins. I really dislike how they look and hope I can get it treated safely. I’m even considering fillers first, because I’m lean. Not sure if fillers help tho.