Mine started years ago with 'freckles' on the top of my feet, just above the toes. Slowly they increased until they are now great brown patches and spots halfway up my calves.
I suspect that my recent success with some alkalizing may also be from a couple of sessions of zapping. There may also be some connection with eating kelp from time to time, because the good salts and minerals in it chases out critters; plus kelp balances electrolytes.
I read that pure apple cider vinegar is good for prominent veins on the legs. I don't remember if it needs to be diluted, or not. I'll go look.