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m.s.dx and copaxone causing movement disorder and ct vs mri

dear dr.3 questions1-is it possible to have ms with neg brain mri but hx or abnormalver,sesomotor test,optic neuritis.2-have you heard of copaxone causing pnkd.3-what can a brain ct dx that cant be found on an mri
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Avatar universal
and yet they say i dont have ms now.back to the no brain lesions on mri
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1312898 tn?1314568133
I just googled it and this one source said that Secondary Paroxysmal Dyskinesia can occur with MS being the primary neurological disorder.  

Red
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Avatar universal
i was dx for 25 yrs and then undx but no new dx.just going downhill
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572651 tn?1530999357
Marie,
Bob has you well covered with the technical side of this.  Is it possible that the doctor is treating you for MS when it is a different neurologic disorder happening?  Just a thought, Lulu
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1453990 tn?1329231426
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Avatar universal
the first exam was ver.i missed spacing.i wrote the wrong acronym for my movements.they came on shortly after i was put on copaxone and even though im off it i have tremors bizarre movements that my pt called paroximal dyskinesia,thank you so much for response.do you have a reference for ms with neg brain mri.ive been battling this for 30 years now.again,thankyou.marie
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1453990 tn?1329231426
On number 2, I'm not aware of any movement disorder that is "linked": to Copaxone, although some may have been reported as a side effect.  Paroxysmal nonkinesiogenic dyskinesia is a genetic disease, so I don't think it can be caused by a medication.
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1453990 tn?1329231426
1.  Yes
2.  No, I have not.
3.  CT is a "real anatomical image."  MRI is a computer derived model. It is not a "real" image.  This is why they always use CT for Radiotherapy planning or surgical positioning.  MRI is very sensitive to change in proton distribution in dipole molecules like water.  It really is poor at imaging high density items like bone and hard tumors.  Many hard tumors are seen on MRI, not from the tumor, but from the "mass effect" as it displaces the softer tissue around the tumor.

CT is pretty useless at detecting the subtle changes in the water distribution that happens as a result of demyelination.  MRI is great for looking at those subtle shifts in water.

Bob
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