Schlerotheropy has made my surface veins worse. Can you please advise?

You likely require a few treatments.  If you have larger vessels foam sclerotherapy or EVLT may be required.  Consultation with a vascular surgeon may be worth pursuing.  Our clinic offers consultation with sclerotherapy nurses and vascular surgeon  consultation for any case that is complex. 

One possible side effect of sclerotherapy is telangiectatic matting which is basically a cluster of very fine little red veins in the area of prior treatment as a result of excessive inflammation.  This is more common with foam sclerotherapy at stronger concentrations and/or with high injection pressure.  While you don't have a picture, the description you give resembles this.  Telangiectatic matting can often improve on its own if left alone, however, this often takes a long time (year or more) and in some cases it wont resolve on its own.  There is also the option of treating the area to hasten healing time. This can be done with the use of a special laser or a different sclerosant like glycerin with epinephrine that is not associated with matting.  I have used both of these successfully in my practice. Get another opinion from a vein specialist in your area. I hope this helps, best of luck.  

Some people are prone to matting, even if the doctor does everything correctly and you followed all the instructions. Unfortunately, a stronger solution can make things worse. 

Sclerotherapy is a process and may average 3 to 5 sessions depending on the amount and size of the veins.  It is good that you had a scan but make sure that the scan was looking for valvular reflux and not DVT.  It would be helpful if you enclosed a picture.  Also see if your doctor used foam which may be more effective for you than saline.

It’s not un common for patients to have this reaction to sclerotherapy. Veins can get quite irritated with higher concentrations of the agent used. I recommend warm compress and compression over  the area and allow time to heal before any further treatment . It can take several months to see results. 

It is important to ensure that any underlying veins into these areas are treated correctly.  An ultrasound scan should be focused in the upper levels under the surface to detect any possible small perforator "communicating" veins.  Also any underlying reticular "feeder" veins should be addressed too.  Typically these underlying veins area treated with slightly stronger and foamed solutions for best results.  The surface is then injected with dilute solution which is enough to damage the lining of the veins.  We also advise compression stockings after these treatments.  My wife is from Perth, Australia.

I can't be sure without photos but early recurrence after initially successful surface sclerotherapy is typically due to venous reflux in varicose veins or incompetent perforators under the skin.  A careful ultrasound by an experienced venous monographer can typically find those veins.  If those veins are then treated, typically with ultrasound guided foam sclerotherapy you should get better and more lasting results.

While a picture would be helpful here, it is common to get something called telangiectatic matting following sclerotherapy. This is particularly common with foam sclero. This may be what is happening for you and I would recommend seeing an experienced vein doctor/phlebologist in your area to determine the cause. If this happens in my practice, I use a laser to clean things up. Good luck and I hope this helps!