By ‘dermatones’ do you mean

more appropriately ‘fasculations’? Big uncontrollable twitches of either the muscles or skin? Web up ‘fasculation+GBS [or CIDP]’ and you will find they go together -unfortunately.
There are many who feel that supplementing with calcium citrate plus magnesium helps still this occurance. Others suggest soaking your feet in epsom salts as there is magnesium in that which is asorbed directly thru the skin… Don’t forget the methylcobalamin Vit B-12, not the cyanocobalmin 12…the Methyl is more asorbable for some reason.
You have to watch how much mag you take as its got a s/e of diarhea. My own experience with the soaking was that it drove my feet absolutely crazy! [Burning, itching – you name it!] The pills are ok tho- for me. Takes about 7-10 days to kick in? That twitching can truly drive you nuts tho!
It’s that or more drugs? I don’t know about you, but I’ve enough of those, thank you!
HOpe this helps.