Dr Simon Kelly, from the Priory Hospital in Southampton, said Margaret Moran's mental state is so weak she may need to be restrained to leave her own home.
He said the former MP had "experienced panic attacks" and "nightmares" over a newspaper report late last month that claimed she had been spotted at a pub.
Asked how Mrs Moran would have reacted if she had to come to court, Dr Kelly said:
She is so sensitised to publicity, this would have been the most difficult place for her to come. I wonder physically whether it would be possible to get her here. I don't know whether it would be physically possible to remove her from her home without restraining her.
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