Skin hyperpigmentation may occur after sclerotherapy due to hemosiderin deposition from trapped blood; massage

https://medium.com/@merlenamlr/genetics-and-varicose-veins-how-sclerotherapy-addresses-inherited-risks-ad95b5ef346b

Skin hyperpigmentation may occur after sclerotherapy due to hemosiderin deposition from trapped blood; massage, compression, and time often improve these brownish streaks or spots.