Can I treat the vein on my forehead somehow? (photos)

Central forehead veins are a common complaint and they can be treated by a combination of sclerotherapy and removal through tiny (micro incisions). Sometimes sclerotherapy alone will work.  The pictures veins are large and most llikely will require more than sclerotherapy alone.  This is an office procedure done under local anesthesia.

Forehead veins are common, and often when smiling, laughing, or other actions which increase jugular pressure, they will stand out more.  Sclerotherapy can be done, but I agree with Dr. Landi that yours are large and would be better treated with a microphlebectomy.  Find someone skilled with facial veins/ anatomy so as to not leave large scars.