I had tear trough fillers done 8 months ago. My sinuses have been worse since then could they be the cause?

Hello, and thanks for your question. Sorry you've been having sinus issues. It is very unlikely that your tear trough injection has anything to do with your sinuses symptoms, which I discuss discussing with your primary care physician, if you haven't already. Best of luck, Dr. Frucht.  

Injection of filler to improve tear troughs should not interfere with your sinuses.  Remember that the filler is injected above the bone of your skull while sinuses are spaces within your skull.  The only caveate is if you had an infection or inflammation within the filler, which you would see as red swellings, you could feel pain in that area.  If you do not have any external signs of problem, it is likely unrelated.  I recommend that you see an Ototrhinolaryngologist (Ears, Nose, Throat doctor) for evaluation of your sinuses.  He or she can run a small scope into your nose to check for inflammation or, if necessary, a CT scan to look at your sinuses.I hope this answer was helpful. Best wishes!