Nurse!

Bam Margera is in a hospital battling a very serious case of pneumonia, complicated by COVID-19 ... TMZ has learned.

Sources close to the situation tell us Bam was hospitalized in San Diego earlier this week. He then tested positive for Covid while in the hospital ... and since then we're told doctors decided to put him on a ventilator. He's being treated in ICU, but his condition is stable.

As we reported, Bam's been in and out of rehab this year after he had completed a one-year treatment program for drug and alcohol abuse.

Our sources say during one of his stints in rehab, he befriended an attorney who convinced him he could get him out of the court-ordered treatment and "free Bam."

Since then, we've seen him partying it up in Atlanta in September, and hitting Las Vegas the following month. We're told Bam never completed his court order and many people close to him were concerned for the former 'Jackass' star.

Our sources say the so-called "Free Bam Movement" -- which was fueled by online speculation his family put him in a conservatorship similar to Britney Spears -- really confused Bam and hurt his recovery process.

We're told it got so bad, his family and temporary healthcare guardian -- who's a longtime family friend -- started receiving threats over the summer, and had to address it publicly.

The American Girl doll brand is standing its ground after getting a ton of backlash for a book that encourages young girls to explore their identity, and offers info about transitioning.

The company tells TMZ, "We value the views and feedback of our customers and acknowledge the perspectives on this issue. The content in this book, geared for kids 10+, was developed in partnership with medical and adolescent care professionals and consistently emphasizes the importance of having conversations and discussing any feelings with parents or trusted adults."

AG continues, "We are committed to delivering content that leaves our readers feeling informed, confident, and positive about themselves."

The franchise is known for promoting self-esteem among young girls, but it had a lot of folks up in arms for selling its book, "A Smart Girl's Guide: Body Image Book". Some social media users accused the company of promoting puberty blockers to children ... and convincing them they're born the wrong way.

One of the specific sections that got a lot of pushback reads, "If you haven't gone through puberty yet, the doctor might offer medicine to delay your body's changes, giving you more time to think about your gender identity."

Celine Dion is coping with a serious disorder that makes people unable to talk or walk -- and as a result, she's forced to postpone her European tour once again.

The singer was very emotional early Thursday morning as she revealed her diagnosis, telling fans about the extremely rare neurological disorder called stiff-person syndrome.

Celine says it's the reason she's been suffering spasms lately, and it's affected "every aspect of my daily life" -- and it's made it difficult for her to sing at her full ability.

Celine then breaks the tour news to fans ... before adding she's got a team of medical professionals working on getting her back into performance mode, but it hasn't been easy.

Stiff-person syndrome only affects about one in a million people, and it can cause frequent muscle spasms due to heightened sensitivity to things like touch, emotional distress or noise. It can leave some unable to walk or, in severe cases, speak.

Celine's concert was set to kick off February in the Czech Republic -- but it's now slated for March 2024, according to her site. A handful of other shows were canceled, too.

Chris Kattan is hospitalized after a scary health situation forced him into emergency surgery ... and as a result, he'll miss some upcoming dates in his comedy tour.

Sources connected to Chris tell TMZ he recently came down with Streptococcus Pneumoniae, an extreme case of pneumonia, and on Sunday was rushed to the hospital. From there, he needed emergency surgery, but thankfully the operation was successful.

We're told as long as things continue to go well, Chris will be released from the hospital Friday, and can hopefully return to work sometime in the near future.

Unfortunately, Chris had a show lined up for this Friday in Valparaiso, IN ... which we're told will have to be rescheduled, along with some other upcoming tour dates.

As you know, Chris stayed out of the limelight for a while, but is back to doing standup.

Of course, he had an 8-year run on "SNL" where he was featured in some iconic sketches, playing Mango or boppin' his head with Will Ferrell during "A Night at the Roxbury."

BTW -- we got Chris at LAX earlier this year telling us how he was champing at the bit to revive the 1990s cult classic comedy -- he said he'd wanted a "Roxbury" sequel for years, and had ideas about how to bring it into the 21st century.

Dustin Poirier was just released from the hospital after battling a nasty Staph infection -- but the UFC star refused to miss even a beat of daddy duty -- the lightweight contender went straight to watch his daughter in her school play!

33-year-old Dustin, on crutches, along with his wife, Jolie, attended their six-year-old daughter Parker's play in Louisiana ... where his adorable little girl was dressed as an angel.

"Straight from the hospital to the school play to see my little angel this morning!" Poirier wrote on social media.

Just a day ago, Poirier was laying in a hospital bed as doctors treated his left foot ... after he came down with a Staph infection.

According to the Mayo Clinic, "Staph infections are caused by staphylococcus bacteria." They typically clear up after the patients been treated with an antibiotic. But, MC says that's not always the case.

"However, some staph infections no longer respond, or become resistant, to common antibiotics. To treat antibiotic-resistant staph infections, health care providers may need to use antibiotics that can cause more side effects."

Dustin posted a photo of the mangled appendage ... and captioned it with what we were all thinking -- "Wut da helllll?"

As serious as the infection can be, it's great news to see DP discharged from the hospital.

Poirier was last in the Octagon at UFC 281 ... where he defeated Michael Chandler in one of the year's most exciting fights.

It's unclear how long it'll be until Dustin's ready to fight again.

Take a deep breath, Bills Mafia -- Von Miller says everything is going to be okay after undergoing season-ending ACL surgery ... sending a heartfelt message to his fans from the hospital bed.

Miller posted a video shortly after the bad news broke ... saying, "Yerrr! Bills Mafia, what's good? I'm good man. I'ma be right back, man."

"Mentally, I couldn't be in a better spot and I think that is the majority of it. Don't feel sorry for me, don't say I hate it for you -- none of that stuff 'cause I am good!"

The Bills announced on Wednesday that the star pass rusher -- who signed a 6-year, $120 million contract this offseason -- is sidelined for the rest of the season due to the injury ... but Miller is already looking forward to getting back to 100%.

"I'm excited for the opportunity to show my teammates how tough I am, how hard I work, and how important that this means to me. I love you guys, and I appreciate you guys. All love and respect. Don't blink, baby!"

Miller suffered the injury against the Detroit Lions at Ford Field on Thanksgiving Day ... but the initial belief was that the 33-year-old avoided significant knee injury.

According to head coach Sean McDermott, Von checked in to the hospital for exploratory surgery ... but doctors told the two-time Super Bowl Champ that he tore his ACL instead.

McDermott called the injury a "very unfortunate situation" for Miller and their team ... adding he knows how much #40 will miss being out there with the guys.

A man has been arrested in connection to the brutal baseball bat attack in NYC last week -- and cops say it appears to be totally random ... because the suspect and victim were total strangers.

36-year-old Karim Azizi was hauled in by the NYPD Wednesday morning on three different charges -- assault, attempted assault and criminal possession of a weapon. Of course, Azizi is the man cops suspect was behind the brutal attack that was captured on camera.

Law enforcement sources tell us the perp and victim were total strangers, and that the beating seems to have come out of nowhere, despite some believing it may have been targeted at first. A warrant squad, we're told, picked Azizi up at his Hamilton Heights home.

Our sources also say ... the video of the incident assisted in capturing him.

As we reported ... the victim was walking on the sidewalk minding their own business, when suddenly -- the attacker pulls a bat out and hits the victim in the back of the head.

Sen. Ted Cruz says his teenage daughter is "okay" after cops were called to his Texas home Tuesday night for a medical emergency.

Houston PD responded to Cruz's house in Houston's River Oaks neighborhood around 8 PM after receiving a report of a 14-year-old with self-inflicted stab wounds to their arm. The Senator, his wife Heidi and their 2 daughters, ages 11 and 14, live in the house.

One person was rushed to a hospital for treatment. Although police are not disclosing the patient's name, Cruz's rep issued a statement to ABC News, saying ... "This is a family matter and thankfully their daughter is okay."

It's unclear if Sen. Cruz was home at the time, or who called 911.

His rep adds, "There were no serious injuries. The family requests the media respect their daughter's privacy at this time."

UFC star Dustin Poirier provided an update on his battle with a gnarly Staph infection on Tuesday ... showing off his swollen left foot from his hospital bed.

"The Diamond" has been getting treatment all week ... and judging by his recent pic, it ain't goin' too hot for the lightweight.

"Wut da helllll," Poirier said on Twitter ... alongside a shot of the deformed foot.

Poirier is hoping to finally get out of the hospital on Wednesday ... but made the best of his stay on Monday night, when he tuned in to his New Orleans Saints' matchup against the Tampa Bay Buccaneers.

Unfortunately for Poirier, it wasn't too fun of an experience -- his home team ended up losing in the final seconds as Tom Brady and Co. pulled off the wild comeback.

Poirier -- who beat Michael Chandler in November -- also took advantage of his time by talking trash with Conor McGregor ... saying he's down to step in the Octagon with him for a fourth time.

Terrifying scene ahead of the Atlanta Hawks game on Monday night ... Bob Rathbun, the team's play-by-play announcer, suffered a frightening medical emergency while on air -- and needed to be rushed to the hospital.

Thankfully, however, the 68-year-old is now said to be doing better ... and is in "stable" condition.

Rathbun was previewing the Hawks' game against the Thunder for Bally Sports with Dominique Wilkins ... when he suddenly appeared to lose consciousness in his chair, and convulse uncontrollably.

WARNING -- THE VIDEO IS HARD TO WATCH.

Medical personnel raced to his side to tend to him before the cameras cut away.

According to Bally Sports officials, he was suffering from dehydration ... and was taken to a local medical facility. They added he's now both "stable" and "responsive."

Lauren Jbara filled in last-minute for Rathbun to call the game -- which the Hawks lost, 121-114.

Get well soon, Bob.

WWE Hall of Famer Barry Windham, the maternal uncle of WWE star Bray Wyatt and former WWE wrestler Bo Dallas, suffered a heart attack over the weekend and is now in the ICU.

According to a GoFund Me campaign created by Barry's niece, Mika Rotunda, the 62-year-old went into cardiac arrest while traveling through an airport in Atlanta.

Mika says her uncle underwent an emergency procedure to save his life ... adding the wrestling legend's future is uncertain.

Windham, son of Robert Deroy Windham, better known by his ring name Blackjack Mulligan, was a household name in National Wrestling Alliance and WCW.

One of the most memorable moments of Barry's career was when the 4-time NWA/WCW tag team champion turned heel on Lex Luger and joined the Four Horsemen.

The Four Horsemen was a wrestling group originally in NWA and later WCW ... that consisted of Ric Flair, Arn Anderson, Ole Anderson, and Tully Blanchard.

Windham was inducted into WWE's Hall of Fame in 2012 alongside Flair, J.J. Dillon, Arn Anderson, and Blanchard.

Nick Cannon just had a major health SCARE ... landing him in the hospital with pneumonia.

The "Masked Singer" host posted a photo of himself in a hospital bed, wearing a face mask, gown and beanie.

The father who has welcomed 11 kids with 2 on the way casually revealed his diagnosis to his millions of IG fans ... "It's just pneumonia, nothing I can't handle. Okay, so I guess I'm not Superman."

Then Nick became more serious, making a veiled reference to his 10-year battle with the autoimmune disease lupus ... "I promised myself I would never be back at this place again… great lesson to take care of YOU or YOU won't be able to take care of everyone else."

Nick said he didn't want prayers or well wishes...he just needs some much-needed rest and he'll be back "stronger than ever."

What's more ... Nick is currently on his "Cannon Wild 'N Out" tour and performed a sold-out show Thursday night at Madison Square Garden in NYC. He reflected, "Now I'm all alone in a tiny hospital room. Life is definitely a rollercoaster!"

Aerosmith called off their concert Friday night in Las Vegas ... this after Steven Tyler had fallen ill.

The legendary rock band was set to perform at Dolby Live at Park MGM as part of their "Deuces Are Wild" residency ... but Steven got sick about 2 hours before they were to hit the stage. It's unclear what the medical issue was that benched the band.

The group posted a statement to Instagram ... "It is with great disappointment that we are forced to cancel tonight's show in Las Vegas due to Steven feeling unwell and unable to perform. He is expected to make a full recovery for Monday night's Las Vegas show. We sincerely apologize for the last-minute notice." All tickets will be refunded.

Back in May, the singer also experienced health problems ... Steven voluntarily went to rehab after relapsing on pain meds following foot surgery.  As a result, Aerosmith was forced to cancel the first leg of their Vegas residency over the summer. They started performing again in September.

The United States just got some GREAT news ahead of Saturday's match against the Netherlands -- Christian Pulisic has been cleared to play after suffering an injury against Iran.

Captain America's been recovering from getting hit in the balls a pelvic contusion this week ... which came after making contact with Iran's goalkeeper after scoring the game-winning goal.

CP said Thursday he was taking it one day at a time ... but was doing "everything in my power" to make it out on the pitch on Saturday.

Pulisic also clarified his injury was, in fact, a pelvic contusion ... saying, "I didn't get hit in the balls."

"I'm alright. It was very painful. That bone is there for a reason to protect you and I hit it well. I was sore."

He posted a Snapchat from his hospital bed after the 1-0 win on Tuesday ... promising he'd be back for their next match -- but admitted the pain was pretty tough to fight through.

The 24-year-old is holding up on his promise ... 'cause Pulisic is now good enough to go as the Red, White and Blue head into the round of 16.

U.S. soccer superstar Christian Pulisic wants everyone to know his gonads are perfectly intact ... telling reporters his World Cup injury was legitimately a "pelvic contusion" -- and not a made-up term for sore testicles.

Pulisic was injured after colliding with Iran's goalkeeper during his game-winning goal for Team USA on Tuesday ... forcing him to miss the second half of the match.

The 24-year-old midfielder was hospitalized after the contest ... but updated his supporters with a selfie, saying he'd be ready to take the pitch on Saturday against the Netherlands.

Based on the area of contact during the incident, many believed Christian's "pelvic contusion" diagnosis was just a code word for getting hit in the family jewels ... but now, all that speculation can be put to rest.

"I didn't get hit in the balls," Christian said with a laugh. "I'm alright. It was very painful. That bone is there for a reason to protect you and I hit it well. I was sore."

Christian says he's still taking it one day at a time ... but is doing "everything in my power" to be back in time for Saturday's match.

Terry Bradshaw's family show, "The Bradshaw Bunch," won't be returning for a 3rd season, TMZ has learned, and the reason has to do with Terry's health.

Production sources tell TMZ ... the E! show was renewed for a third season and filming was supposed to begin last March, but around that time Terry informed producers he had a serious health condition, which demanded his full attention.

At the time, we're told Terry didn't give specifics on his diagnosis but he let producers know he couldn't move forward with the show. In the end, our sources say the Bradshaws and E! mutually decided to not go forward with the series. The network has never disclosed the show was canceled.

Last month, Terry revealed on NFL on FOX he went in for an MRI for what he thought were neck issues ... and that's when doctors discovered a tumor and diagnosed him with Merkel cell carcinoma -- a rare, aggressive form of skin cancer.

Terry had been diagnosed with bladder cancer in November 2021, during the airing of the second season of the show.

The series, which was filmed at the family's ranch in Oklahoma, was centered around the 4-time Super Bowl champ, his wife Tammy and their 3 daughters.