Here are some of the latest health and medical news developments, compiled by the editors of HealthDay:
Lady Gaga Postpones European Tour Due to Fibromyalgia
Pain has forced Lady Gaga to postpone the upcoming European leg of her current tour.
In an Instagram post Monday, the pop star said "trauma and chronic pain" would prevent her from performing in Europe until early next year, The New York Times reported.
Last week, Lady Gaga canceled a show at the Rock in Rio Festival in Brazil, saying she was in "severe pain."
The first North American leg of her tour began Aug. 5, and the second leg of that tour is expected to begin as scheduled on Nov. 5., according to a statement from concert promoter Live Nation, The Times reported.
Lady Gaga has said she has fibromyalgia, which can cause muscle pain and fatigue.
-----
City Asks Judge to Approve Lawsuit Against OxyContin Maker
A city in Washington state has asked a federal judge to let it move forward with a lawsuit seeking damages from Purdue Pharma, the maker of the opioid pain medication OxyContin.
The lawsuit launched in January by the city of Everett alleges that Purdue knowingly sold OxyContin pills to be channeled into the black market and eventually into the city, and did nothing to stop it, the Associated Press reported.
The lawsuit doesn't say how much money the city is seeking. That's to be determined at a later date, according to Mayor Ray Stephanson.
Purdue filed a motion to dismiss in March and arguments were heard Monday by U.S. District Court Judge Ricardo Martinez. Patrick Fitzgerald, the attorney for Connecticut-based Purdue, told the judge there were a number of reasons why the case should be thrown out, the AP reported.
For example, Fitzgerald said the city cannot show a direct link between the company's conduct and the alleged harms.
Christopher Huck, the lawyer for Everett, said emails and other internal company documents show that Purdue knowingly put OxyContin into a supply chain they knew led to an organized drug ring, causing harm to the working class city of about 108,000 located north of Seattle, the AP reported.
"OxyContin has devastated the community and inflicted enormous harm," Huck said.
Last week, Tacoma, Wash. sued Purdue Pharma and two other opioid painkiller makers, Endo Health Solutions and Janssen Pharmaceuticals, alleging they made false and misleading statements about the benefits and risks of opioids to doctors and patients over recent decades, the AP reported.
-----
Actress Kate Walsh Reveals Benign Brain Tumor Surgery
Actress Kate Walsh revealed Monday that she had surgery for a brain tumor in 2015.
Walsh, best know for her role in the TV series "Grey's Anatomy," was diagnosed with a meningioma, a tumor arising from the lining that surrounds the brain and spinal cord, CNN reported.
"I was shocked," Walsh said of the moment she received the diagnosis. "It was not what I expected."
Within three days, she had the tumor removed during surgery at Cedars-Sinai Medical Center in Los Angeles. After the operation, doctors confirmed that the tumor was benign, CNN reported.
