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.
More top news
More cloud than sunshine into the start of the new week.
Valtteri Bottas will replace Nico Rosberg at Mercedes, becoming Lewis Hamilton's team-mate in the process.
A picture of a dozen lemons is helping fight breast cancer by providing a visual reference of the symptoms women should be looking for.