star - who after 21 years of marriage - has not commented on her ex's health.
News of Tom's diagnosis comes a month after Robert asked to put Tom in a care facility following a "medical emergency."
Robert of the lawyer because Tom was suffering from "" following various lawsuits and the divorce filing.
He said: "At age 81, Tom's current condition has sadly deteriorated to the point where he cannot care for himself without assistance.
"His short-term memory is severely compromised and, on information and belief, he is often not oriented as to date, time or place."
Robert added that he "has first-hand knowledge that Tom lives alone and can not care for himself."
He was granted temporary conservatorship in Febrary until March 30 and is going to pursue a permanent extension.
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Back in December, Tom was sued from the families of plane crash victims.
He reportedly that should have gone to his clients, "including the widows and orphans who lost loved ones in the tragic crash of Lion Air Flight 610.”
Tom allegedly did so to “continue funding his and Erika’s lavish - claims which the exes have denied.
The lawyer was held in civil contempt and his why he couldn’t pay the $2 million he owed to four of his clients.
RHOBH's Erika Jayne could be FIRED from show over claims she and ex Tom embezzled money from orphans, ex-costar Dana Wilkey claims