(Concern) Whether to undergo saphenous vein treatment

I'm not experiencing it myself, but I think my younger sister has varicose veins. Her blood circulation has always been poor. Recently, she has been under stress and tired, so I wonder if her symptoms are related to varicose veins. The problem is that her condition is worsening over time, and she is temporarily wearing medical compression stockings. I'm also curious whether these provide any calming effect and if she must seek medical treatment. She is very busy and doesn't have time to visit the hospital herself, so I'm worried.