Is this a chemical burn from the injections? (Photo)

The posted pictures do not look like necrosis but rather like bruising and staining following sclerotherapy.  It is only a short time from your treatment and you need to give it more time to heal.  The dark areas may require draining with a small needle.  Wearing compression, applying Dermaka cr...

Thank you for asking about facial laser treatment.Swelling after a laser can last a long time (six weeks or more) but you should return to where you were treated to discuss your concern and learn what to expect. Hope this helps. Best wishes. Elizabeth Morgan MD PHD FACS  Board Certified Plastic ...

Typically the sclerosing agents will cause an inflammatory response resulting in scarring of the dilated veins and their eventual collapse. This process may take several days to weeks depending on the agent used. Repeat treatments may often be needed. 

I don't see any contraindication to getting a tattoo to camouflage the brown areas.  These appear to be staining from your prior procedure.  It would be prudent to see a vein specialist to look at your leg before tattooing to ensure that all is ok with your venous circulation.

If you treat your hand veins then these veins will no longer be available for an iv. I never treat beyond the upper 1/3 of the forearm so that these veins can be preserved for future use.  Sclerotherapy can be controlled by compressing certain veins so the solution will not enter them.

It’s important to distinguish between varicose veins and spider veins when choosing between laser therapy, sclerotherapy, and vein surgery. With two board certified vein specialists, our center uses a combination of visual examination, functional flow measurements, ultrasound, t...