Discoloration of Skin in Area of Injections. (photo)

Filler injections in general do not cause direct pigmentary alterations.  Bruising and swelling from fillers can lead to increased vasularization (blood vessels) or pigmentation from the bruise (hemosiderin) in rare patients.  This is not directly related to the filler but the after sequelae.  Vascularization can be treated with vascular lasers like v-beam or IPL.  Hemosiderin can be treated with some tattoo lasers or chemical peels.  I would suggest returning to your treating physician to discuss treatment or seeking out an expert in your area in lasers.  Best of luck.

Some patients experience bruising or a "Tyndall effect" after Restylane injections.  This would cause a blue or purple discoloration.  While it is somewhat difficult to adequately assess your skin changes based on this photo, it seems unlikely that Restylane is at fault here.  The timing could just be a coincidence.  I recommend visiting a Dermatologist for an in-person exam.

While it is difficult to adequately view the discoloration well in your photo, it does appear to be vascular in nature, and not pigmentation. However I would recommend that you see your dermatologist to determine what the issue is. Without more information, it would be difficult to determine what may have caused this.