Hello,
Kenalog is a steroid (
Triamcinolone) and Synvisc is a hylan which is used
for osteoarthritis.Long term use of both can cause changes in the skin,facial swelling and redness and flushing of the skin.However as you have been diagnosed with rosacea,so other causes also need to be looked into. The exact cause of rosacea is still unknown but some of the aggravating factors are gentics, mite sometimes found in hair follicles (Demodex folliculorum),H.