A medications chart for PSP from 'Parkinsons Canada' No longer posted - I found it in the Google archive. T. Moore (2013)
This medication chart ducks the anaesthetic issue. Fair enough, it s simple chart.
Of great interest are the atypical antipsychotics such as Quetiapine which are often given to quieten disturbed behaviour in elderly dementia cases and at times PSP.
If you have issues with emotions and disturbed behaviour you may want to discuss Antihistamines with your G.P. I have seen these used for their milder sedative effect with some success.
I can't vouch for the credibility of this list... Caution advised.
The list of medications can be found here:
Medications causing severe side effects PSP need ideas for non medical alternatives
Do I have PSP? What else?
Alternative treatments for PSP
Sleep disturbance in PSP 
