Hi

I suffer from severe abdominal stomach spasms which i have just been told is a form of myoclonus.
I've had an MRI scan which shows a slight widening of the central canal in the spine, this may be the cause - has this been looked at for your wife? It could be putting pressure onto the spine and causing the spasms.
Other tests I have had are an EGM and an SSEP - I have not had the results yet, but depending on what they say the Drs may find the cause for the myclonus. If they do then it should be treatable, if not it's using different drugs.
I take clonazepam when i have an attack which does seem to help - has your wife tried this?
I'll keep you posted if i find anymore out after my results.

warmest wishes to you and your wife.