How good is Fumaderm for psoriatic arthritis

[Fred]

the motorway is approved for cars.
Does this mean that trucks and motorcycles cannot ride it?
No of course not.

Fumaderm is approved for plaque psoriasis. It contains DMF.
DMF works for all types of psoriasis, you name it,  it works (70% chance of course) .
Do you really think that your PsA would not benefit, because it reads that fumaderm is not approved for it????
You cannot be thinking that !
Of course PsA doesn't care what the sign reads. It can't read

No I didn't think anything, I was asking a question: "How good is Fumaderm for psoriatic arthritis"

Thank you but your information has not helped.  

Thank you Caroline you have a great way with words, and you are correct as this link proves regarding MS
NO LINKS ALLOWED

And that has helped even less.  

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Going back to my question "How good is Fumaderm for psoriatic arthritis" I'm not asking anything else about DMF just How good is Fumaderm for psoriatic arthritis, if anyone does have experience of Fumaderm working with psoriatic arthritis please post.