If you gave him a multi worm treatment he should be free of Gapeworm as well but sometimes they need a more specialized treatment. There's threads on this forum about that, I've never had worm issues so don't know offhand. I'd check the label of whatever you gave him last and see if it's supposed to kill Gapeworm as well. If not, I guess that's one other angle to treat.
Sounds like maybe a tapeworm cyst in the brain, which is a permanent issue generally only able to be solved by surgery, but there's so many things that can cause these symptoms, guessing is kind of useless.
Treatment is likely to need to be long term, whatever this issue is; once you're seeing symptoms of this nature the cure is very rarely an overnight thing. Stopping a treatment because results are not instantaneous would be a mistake. He's showing cumulative damage, this did not happen to him overnight, it slowly built up until it reached the point of him showing these symptoms.
I'd have him on the St John's Wort as a support, it can treat many issues regardless of what caused them. It's proven to work against tumors (especially those affecting the nervous system), viruses, autoimmune diseases, cancers, general nerve damage, and a lot more, and it shouldn't hurt him.
Since we still don't know what's wrong with him, treating it specifically is difficult and guesswork is about all we have to go on at the moment.
Best wishes.
Sounds like maybe a tapeworm cyst in the brain, which is a permanent issue generally only able to be solved by surgery, but there's so many things that can cause these symptoms, guessing is kind of useless.
Treatment is likely to need to be long term, whatever this issue is; once you're seeing symptoms of this nature the cure is very rarely an overnight thing. Stopping a treatment because results are not instantaneous would be a mistake. He's showing cumulative damage, this did not happen to him overnight, it slowly built up until it reached the point of him showing these symptoms.
I'd have him on the St John's Wort as a support, it can treat many issues regardless of what caused them. It's proven to work against tumors (especially those affecting the nervous system), viruses, autoimmune diseases, cancers, general nerve damage, and a lot more, and it shouldn't hurt him.
Since we still don't know what's wrong with him, treating it specifically is difficult and guesswork is about all we have to go on at the moment.
Best wishes.