Hi Ella and welcome to our group! I had gamma knife back in November 2016 for an AVM in the left temporal. I did not have any weakness but I know it is not uncommon to experience some swelling and require steroids around the six month mark(ish). From what I’m aware of the steroids usually resolve the swelling but have read a couple cases where there was an ongoing battle with effects of SRS.
I attached the above link and I know she had a tough battle. I would always recommend further consultation with your care provider. Some other folks here will hopefully pass along their experience. Once again welcome, and it’s great you’re here with us! Take Care, John