Avm treated with gaama knife. May 2017?

I hv avm of size 4x5x6 cm in right temporal lobe which i came to knw in 2015 when i got first episode of sezuire further which was treated in aiims with gaama knife however size of avm get reduced to half its now of size 3x3.5x4 cm and edemr surrounds the avm according to mri taken in oct 2017 but problem is that i got weakness in my left body since from may 2017 which gradually comes and i am continuously doing exercise physio since from the day i feel weakness but I didn't find any change in my self i feel problems in walking n doing thing with my left body doctor gives me dexamethasone 4 mg twice a day with diuretics i have taken them too more than two months but here's no change and conditions of my body is same but before and after gaama knife i was perfect with all limbs i am facing problems mainly after april or may 2017