The cancellations affect scheduled concerts Tuesday and Wednesday in Tacoma, Billboard reported.
The 44-year-old singer, who is three dates into her Trustfall Tour, wrote in an Instagram post that the family medical issues “require our immediate attention.”
“I am so sorry to inform the Tacoma ticket holders that the two shows October 17 and October 18 (tomorrow and Wednesday) will be postponed,” Pink wrote. “Family medical issues require our immediate attention. I send everyone my sincerest apologies for any inconvenience this has caused. I am sending nothing but love and health to all.”
The singer did not elaborate about the medical issues, Deadline reported. She said that LiveNation is working to reschedule the concert dates.
Representatives for Pink did not immediately respond to Entertainment Weekly’s request for comment.
The latest leg of the singer’s tour began Oct. 12 in Sacramento, California, and stopped in San Francisco for two shows on Saturday and Sunday.
Her next scheduled concert appearance is Friday and Saturday in Vancouver, British Columbia, according to Deadline. It was unclear whether those concert dates were in jeopardy.
“I am so disappointed. You know I do everything in my power to never miss a show,” Pink wrote on Instagram at the time. “I hope to see you then, and again, am so deeply sorry for any inconvenience this has caused.”
According to the singer’s website, other North American tour stops this year include Denver; two shows in Kansas City; two shows each in Montreal and New York City; Indianapolis; Cleveland, Louisville, Kentucky; Charlotte, North Carolina; Miami; Sunrise, Florida; two shows in Orlando, Florida; and Tulsa.
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NEW YORK - SEPTEMBER 13: Singer Pink and Cory Hart arrives at the 2009 MTV Video Music Awards at Radio City Music Hall on September 13, 2009 in New York City. (Photo by Michael Loccisano/Getty Images)
LOS ANGELES, CA - JANUARY 31: Singers Pink (L) and Taylor Swift backstage during the 52nd Annual GRAMMY Awards held at Staples Center on January 31, 2010 in Los Angeles, California. (Photo by Larry Busacca/Getty Images)
Singer/actress Alecia Beth Moore (R), daughter Willow Sage Hart, and Carey Hart (C) attend the Premiere of Warner Bros. Pictures' "Happy Feet Two" at Grauman's Chinese Theatre on November 13, 2011 in Hollywood, California.
SANTA MONICA, CA - AUGUST 06: Singer P!nk is announced as the newest face of COVERGIRL Cosmetics at Shutters On The Beach on August 6, 2012 in Santa Monica, California. (Photo by Angela Weiss/Getty Images)
LOS ANGELES, CA - SEPTEMBER 06: Singer Pink performs onstage during the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
MELBOURNE, AUSTRALIA - OCTOBER 04: Singer Pink performs for fans at The Forum Theatre on October 4, 2012 in Melbourne, Australia. Pink is in Australia promoting her latest album, The Truth About Love. (Photo by Scott Barbour/Getty Images)
HOLLYWOOD, CA - SEPTEMBER 16: Pink attends the premiere of Roadside Attractions' "Thanks For Sharing" at ArcLight Cinemas on September 16, 2013 in Hollywood, California. (Photo by Jason Merritt/Getty Images)
LOS ANGELES, CA - OCTOBER 13: Singer P!nk performs at the Staples Center on October 13, 2013 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - JANUARY 26: Singer Pink attends the 56th GRAMMY Awards at Staples Center on January 26, 2014 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)
LOS ANGELES, CA - JANUARY 26: Singer Pink performs onstage during the 56th GRAMMY Awards at Staples Center on January 26, 2014 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)
HOLLYWOOD, CA - MARCH 02: Singer Pink performs onstage during the Oscars at the Dolby Theatre on March 2, 2014 in Hollywood, California. (Photo by Kevin Winter/Getty Images)
NEW YORK, NY - DECEMBER 01: Pink (R) and her mother Judith Moore attend 2015 UNICEF Snowflake Ball at Cipriani Wall Street on December 1, 2015 in New York City. (Photo by Rob Kim/Getty Images)
Singer/songwriter Pink (R) and her daughter Willow Sage Hart attend the Los Angeles premiere of Disney-Pixar's "Inside Out" at the El Capitan Theatre on June 8, 2015 in Hollywood, California. (Photo by Kevin Winter/Getty Images)
BEVERLY HILLS, CA - MAY 12: Honoree P!nk poses with the BMI President's Award during the 63rd Annual BMI Pop Awards held at the Beverly Wilshire Hotel on May 12, 2015 in Beverly Hills, California. (Photo by Chelsea Lauren/Getty Images for BMI)
LAS VEGAS, NV - MAY 22: Recording artist Pink performs onstage during the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by Kevin Winter/Getty Images)
INGLEWOOD, CA - AUGUST 27: (L-R) Pink, Willow Sage Hart and Carey Hart attend the 2017 MTV Video Music Awards at The Forum on August 27, 2017 in Inglewood, California. (Photo by Christopher Polk/Getty Images)
INGLEWOOD, CA - AUGUST 27: Michael Jackson Video Vanguard Award recipient Pink poses in the press room during the 2017 MTV Video Music Awards at The Forum on August 27, 2017 in Inglewood, California. (Photo by Alberto E. Rodriguez/Getty Images)
NASHVILLE, TN - NOVEMBER 08: Willow Sage Hart (R) and singer-songwriter Pink (L) attend the 51st annual CMA Awards at the Bridgestone Arena on November 8, 2017 in Nashville, Tennessee. (Photo by Michael Loccisano/Getty Images)
LOS ANGELES, CA - NOVEMBER 19: Pink (L) and Kelly Clarkson perform onstage during the 2017 American Music Awards at Microsoft Theater on November 19, 2017 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
BERLIN, GERMANY - DECEMBER 10: Pink performs during the 'The Voice of Germany' semi-finals at Studio Berlin Adlershof on December 10, 2017 in Berlin, Germany. The finals will be aired on December 17 on ProSieben. (Photo by Adam Berry/Getty Images)