Kathy Griffin honors mother on her 99th birthday but reveals 'her dementia is worsening'

Kathy Griffin is giving fans a health update on her mother, Maggie Griffin.

The comedian took to Twitter on Tuesday to honor her mother turning 99. While she seemed happy to celebrate the special birthday, Kathy sadly revealed that Maggie's dementia has gotten worse.

"Today is my mother Maggie's 99th Birthday. I spoke with her yesterday and, unfortunately, I'm sorry to say her dementia is worsening," Kathy captioned a photo of her and her mom on the red carpet at the 62nd Annual Primetime Emmy Awards in 2010. "Here's a fun picture to celebrate happier times."

From 2005-2010, Maggie was beloved by Kathy's fans after appearing on the comedian's Bravo reality series, My Life on the D-List. Kathy broke the news about Maggie's disorder in a lengthy message posted to Twitter in January.

"As heartbreaking as this is, I feel the need to share some important info about my mom Maggie," she said at the time. "I've always been honest with you all, but this one is really hard. The pic below, taken in September, was the last time I was able to have a proper/coherent conversation with her. Since that photo was taken, she has rapidly fallen into the throes of dementia. This is never easy for any child, I know this is a reality that millions of people deal with every year. But when it comes to my mom this is particularly hard because her sharp mind was everything."

"Up until this past couple years she was so sharp she always kept me on my toes," she continued. "Her mind was so naturally quick, funny and smart. No one could get anything past her. Watching that slip away so fast has been devastating. I want to assure you all that she is not in pain and she is getting the best 24-hour care. In terms of how she is now, at this point she only knows my name and I love you. I know many of you know what that reality is like...I'm still grappling with it.”

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Kathy Griffin with mother Maggie Griffin
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Kathy Griffin with mother Maggie Griffin
HOLLYWOOD, CA - JULY 10: Comedian Kathy Griffin (L) and mother Maggie Griffin attend a celebration of the Los Angeles engagement of "On Your Feet!", the Emilio and Gloria Estefan Broadway musical, at the Pantages Theatre on July 10, 2018 in Hollywood, California. (Photo by David Livingston/Getty Images)
HOLLYWOOD, CA - JULY 10: Comedian Kathy Griffin (L) and mother Maggie Griffin attend a celebration of the Los Angeles engagement of "On Your Feet!", the Emilio and Gloria Estefan Broadway musical, at the Pantages Theatre on July 10, 2018 in Hollywood, California. (Photo by David Livingston/Getty Images)
JIMMY KIMMEL LIVE! - "Jimmy Kimmel Live!" airs every weeknight at 11:35 p.m. EDT and features a diverse lineup of guests that include celebrities, athletes, musical acts, comedians and human interest subjects, along with comedy bits and a house band. The guests for Thursday, July 12 included Kathy Griffin ("Kathy Griffin: Laugh Your Head Off World Tour"), Jim Jefferies ("This Is Me Now"), and musical guest Vance Joy. (Randy Holmes/Walt Disney Television via Getty Images via Getty Images) JIMMY KIMMEL, MAGGIE GRIFFIN, KATHY GRIFFIN
LOS ANGELES, CA - DECEMBER 15: Kathy Griffin with her mother Maggie Griffin at her book signing for "Kathy Griffin's Celebrity Run-Ins: My A-Z Index" at Barnes & Noble at The Grove on December 15, 2016 in Los Angeles, California. (Photo By Loreen Sarkis/ Getty Images)
LOS ANGELES, CA - DECEMBER 15: Kathy Griffin (R) with her mother Maggie Griffin at her book signing for "Kathy Griffin's Celebrity Run-Ins: My A-Z Index" at Barnes & Noble at The Grove on December 15, 2016 in Los Angeles, California. (Photo By Loreen Sarkis/ Getty Images)
LOS ANGELES, CA - DECEMBER 15: Kathy Griffin (R) with her mother Maggie Griffin at her book signing for "Kathy Griffin's Celebrity Run-Ins: My A-Z Index" at Barnes & Noble at The Grove on December 15, 2016 in Los Angeles, California. (Photo By Loreen Sarkis/ Getty Images)
BEVERLY HILLS, CA - FEBRUARY 10: Actress Kathy Griffin (R) and her mother, Maggie Griffin, attends the 13th Annual AARP's Movies For Grownups Awards Gala at Regent Beverly Wilshire Hotel on February 10, 2014 in Beverly Hills, California. (Photo by Imeh Akpanudosen/Getty Images)
BEVERLY HILLS, CA - MAY 08: Maggie Griffin and Kathy Griffin attend IAVA's fifth annual Heroes celebration at Mr. C Beverly Hills on May 8, 2013 in Beverly Hills, California. (Photo by Jerod Harris/Getty Images for IAVA)
BEVERLY HILLS, CA - MAY 08: Maggie Griffin and Kathy Griffin attend IAVA's fifth annual Heroes celebration at Mr. C Beverly Hills on May 8, 2013 in Beverly Hills, California. (Photo by Jerod Harris/Getty Images for IAVA)
LOS ANGELES, CA - MAY 04: Comedienne Kathy Griffin (center), her mother Maggie Griffin (L) and her sister Joyce pose backstage after Kathy Griffin performed at the Dolby Theatre on May 4, 2013 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
KATHY -- Episode 210 -- Pictured: (l-r) Maggie Griffin, Kathy Griffin -- (Photo by: Ben Cohen/Bravo/NBCU Photo Bank via Getty Images)
KATHY -- Episode 202 -- Pictured: Maggie Griffin -- (Photo by: Ben Cohen/Bravo/NBCU Photo Bank via Getty Images)
KATHY -- Episode 104 -- Pictured: (l-r) Kathy Griffin, Maggie Griffin -- (Photo by: Kevin Winter/Bravo/NBCU Photo Bank via Getty Images)
Comedian Kathy Griffin (R) and mother Maggie Griffin attend NBC's 2011 TCA summer press tour at The Bazaar at the SLS Hotel on August 1, 2011 in Los Angeles, California.
KATHY -- Episode 101 -- Pictured: (l-r) Kathy Griffin, Maggie Griffin -- (Photo by: Kevin Winter/Bravo/NBCU Photo Bank via Getty Images)
Comedian Kathy Griffin (R) and mother Maggie Griffin attend NBC's 2011 TCA summer press tour at The Bazaar at the SLS Hotel on August 1, 2011 in Los Angeles, California.
LOS ANGELES, CA - AUGUST 29: Actress Kathy Griffin (L) and mother Maggie Griffin attend the 62nd Annual Primetime Emmy Awards at Nokia Theatre Live L.A. on August 29, 2010 in Los Angeles, California. (Photo by Dan MacMedan/WireImage) *** Kathy Griffin;Maggie Griffin
Actress Kathy Griffin and mother TV personality Maggie Griffin arrive at the 62nd Annual Primetime Emmy Awards held at the Nokia Theatre L.A. Live on August 29, 2010 in Los Angeles, California.
LOS ANGELES, CA - AUGUST 29: Actress Kathy Griffin (L) and mother Maggie Griffin attend the 62nd Annual Primetime Emmy Awards at Nokia Theatre Live L.A. on August 29, 2010 in Los Angeles, California. (Photo by Dan MacMedan/WireImage) *** Kathy Griffin;Maggie Griffin
TV personality Kathy Griffin and Maggie Griffin arrive at the 62nd Annual Primetime Emmy Awards held at the Nokia Theatre L.A. Live on August 29, 2010 in Los Angeles, California.
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