### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Had my lst of three injections of Synvisc on april l8th in both knees. That night, had reaction in R knee. Swelling, pain, stiffness. Monday, had 40 cc s drained in R knee with a Cortisone shot By Tues, same thing happened. By Friday, went back to doctor. Had another 40 cc s drained in R knee. By Fri. night, both knees swelled, pain, stiffness. Went to E R (Urgent Care Facility) on Sat Morning. Had 40 cc s drained in R knee AND 20 cc s drained now in L knee. Swelling, pain, and stiffness by Sat night. Tomorrow, Tues morning have ANOTHER appt with doctor again. NOT having any more of the series of the 3 shots. How long is this going to happen before I find relief and get back to my original state before the first and only shot. Also, I was SUPPOSED to get Ortho Visc, and they shot in synvisc, did not know that until the shot was completed. If I would have known that, I would have not had it done, as I had synvisc about l0 years ago, with NO relief. The doctor said the ins. co. probably did not approve the Orthovisc.

### output:

Hi It is rather uncommon to have knee swelling after Slavic injection to the extent you are having. The reactions generally happen if you are sensitive to the Chat Doctor.  In my opinion, in your case I would rather rely on anti allergic, knee support, exercises and anti-inflammatory painkillers to help your knee swelling and pain. Repeated aspirations may not help much. In future, I will prefer PRP injections to your knee, for better relief.