Nurse!

Dee Snider just unleashed a bitter rant about Twisted Sister drummer A.J. Pero's death -- saying his heart attack was totally avoidable, but Pero did nothing to save himself or protect his family.

Dee came on TMZ Live to talk about the band's upcoming farewell tour, but ended up venting about Pero. Dee told us he's in the anger stage of grieving because ... he says Pero knew he had a history of heart disease in his family, but never got checked out.

A.J.'s autopsy results -- which Dee revealed -- are what really set him off about his friend's death.

An Indiana Pacers player and his girlfriend were stabbed -- and two ATL Hawks players were arrested for obstructing police -- in a violent incident outside of an NYC nightclub early Wednesday morning ... TMZ Sports has learned.

The stabbing victim is Pacers forward Chris Copeland ... who was stabbed in the stomach around 4 AM after leaving 1Oak nightclub. His girlfriend was slashed in the arm, breast and butt.

Officials says the injuries sustained by both Chris and his girlfriend are NOT life threatening. However, Copeland reportedly suffered a broken elbow in the attack and is undergoing surgery.

Cops say they arrested the person suspected of the stabbing -- 22-year-old Shezoy Bleary. Cops say Bleary used a switchblade in the attack.

Police say Copeland and his girlfriend were having a conversation when Bleary (who didn't know either of them) interjected ... and a fight ensued.

Two Atlanta Hawks players -- Pero Antic and Thabo Sefolosha -- were arrested at the scene for trying to prevent police from setting up a crime scene.

Outside the club, Chris' GF told the media, "We were attacked out of nowhere by a f*cking black civilian."

She continued, "We have nothing to say. We are scared for our lives."

Copeland's teammate Paul George just tweeted about the incident -- saying, "Pray for my brother Chris."

9:40 AM PT -- Antic and Sefolosha left the 10th precinct Wednesday afternoon and are headed to court for their arraignment.

12:30 PM PT -- The two Hawks players were just in court briefly. Each was charged with resisting arrest and Obstructing Government Administration. They were released on their own recognizance and are due back in court on June 16.

12:50 PM PT -- According to the criminal complaint, Antic and Sefolosha were told six times to clear the scene, but would only "move a couple of feet away but refuse to clear the area."

When it came time to arrest Sefolosha, police say he flailed his arms, twisted his body and kicked his legs. It took four people, according to the complaint, to get him into cuffs.

Bo Jackson used to be the king of TWO sports ... now, he's got problems handling a #1.

Jackson called in to "TMZ Hollywood Sports" and told us about how he's getting his 52-year-old body ready for his annual charity cycling event, Bo Bikes Bama ... but he's moving a little slower than he used to.

"I got up this morning and went to the bathroom to pee ... and pulled a muscle," Bo joked.

But the real headline could be that Bo thinks he's gonna get his "BUTT KICKED" in the ride by his former nemesis Brian Bosworth -- who's announced he's participating this year.

9:15 AM PST -- TMZ spoke with Christian Audigier who says he was diagnosed with MDS (Myelodysplastic Syndrome) in January. It is the same bone disease GMA anchor Robin Roberts was diagnosed with back in 2012.

Audigier was on chemotherapy until he received a bone marrow transplant on March 19th.

After the successful transplant, he now goes to Cedars-Sinai 2-3x a week for checkups and is currently doing much better.

Christian Audigier -- the iconic fashion mogul behind the success of Ed Hardy and Von Dutch -- is fighting cancer... but he may be winning.

The legendary designer surprised our photog Monday as he was leaving Cedars-Sinai in L.A. by revealing he had the disease and just finished another round of treatment -- presumably chemo.

He didn't specify the type of cancer ... but indicates he's cancer free.

King posted to his Facebook page on Tuesday, writing, "I want to thank everyone for their concern and good wishes. I'm feeling much better & am leaving the hospital today."

Blues legend B.B. King was rushed to a Las Vegas hospital this past weekend ... we're told for a diabetes-related emergency.

King's rep tells TMZ ... he remains hospitalized at a medical center close to his Vegas home.

Another source tells us the 89-year-old's health emergency was the result of dehydration from his Type II diabetes ... a condition he's lived with for more than two decades.

"Dancing With The Stars" contestant Noah Galloway was hit by friendly fire while rehearsing with partner Sharna Burgess ... and it's brutal and bloody.

When you consider what the former U.S. Army soldier's been through -- he lost both an arm and leg in the Iraq War -- it's gonna take a lot more than a busted tooth to rattle this vet.

It's hard to watch ... while practicing their routine Sharna kicks him in the face and you hear a tooth hit the floor like it's tap dancing.

Yet Noah -- a total pro -- only has three little words to say about it ... "No Big Deal."

"Mob Wives" star Big Ang received the news she was dreading -- the tumor on her throat is malignant.

Ang’s sister, Janine Detore, tells TMZ the tumor is on Ang's voicebox and her voice is deteriorating as a result. She says doctors determined the lemon-sized growth was cancerous after looking at it with a scope and running blood tests.

Janine says the family is awaiting results of another test to determine if the cancer has spread.

There's no history of cancer in the family, but Janine says they fear Ang's 42 years of smoking might have contributed. She adds ... doctors have ordered Ang to quit smoking immediately.

None of the ordeal has been filmed for "Mob Wives" ... but Janine says it might be addressed on the show at some point. Ang is scheduled to have surgery next week to remove the tumor.

Janine says, "We are hoping for the best and are focusing on getting through the holiday. We love the fans and want to thank them."

"Mob Wives" star Big Ang is currently in the hospital after complaining of pain in her neck ... and doctors have since discovered a tumor in her throat the size of a lemon.

According to our sources, earlier this week Ang was admitted to a Staten Island hospital where doctors will soon perform surgery to remove the tumor. We're told it is not yet known whether the tumor is cancerous.

Ang was scheduled to begin shooting for a different reality show, other than "Mob Wives," when she began experiencing the pain.

Ang appeared this past weekend at a reality TV event in New York City where she kept her neck covered up. It's unclear if she was experiencing pain at the time.

3:00 AM PT -- Joni is still in intensive care, but her people say she is "awake and in good spirits." We've learned she had a surgical procedure some time after arriving at the hospital on Tuesday.

Singer-songwriter Joni Mitchell -- who's synonymous with the Woodstock generation -- was rushed to a hospital after a 911 call from her home Tuesday.

Sources tell us paramedics went to 71-year-old Mitchell's Los Angeles home around 2:30 PM. We're told the 911 call was for an unconscious female, but she was alert on the way to the hospital.

Mitchell was in intensive care late Tuesday. It's unclear what prompted the medical emergency, but it appears to be quite serious.

We've put in several calls to Joni's rep ... but haven't heard back.

Mitchell's best known for her hit, "Big Yellow Taxi" ... which the Counting Crows famously covered in 2002. She was inducted into the Rock and Roll Hall of Fame in 1997.

David Lee Roth has no one to blame but himself for that bloody gash he had on his nose during "Jimmy Kimmel Live!" ... because he whacked himself during his signature mic stand trick.

Roth and the rest of Van Halen reunited for an epic performance on "Kimmel" Monday night, but the sanitized version that aired didn't tell the whole story.

During the initial performance of "Panama" ... Roth hit himself in the face with his mic stand while twirling it, leaving a cut across the bridge of his nose.

He kept going, eventually walking offstage to grab a towel. He then patched it up with a band-aid and did the song again. That's the version that aired.

The show must go on.

Bobby Brown is in it for the long haul -- standing firm in his belief Bobbi Kristina can pull out of her coma ... now that she's getting treatment at a facility known for its long term care.

Bobby was walking outside DeKalb Medical this week. It's touted as the best Long Term Acute Care hospital in the Atlanta area ... partly because the facility has equipment to provide continuous monitoring of vital signs -- crucial in a case like Bobbi Kristina's.

As we reported ... doctors at Emory University Hospital tested her responsiveness last week before she was transferred to DeKalb. We're told there was no change.

There's only one way to celebrate a 4-year-old girl beating cancer ... and that's with a Disney princess themed anti-cancer party!

Cincinnati Bengals defensive lineman Devon Still and his adorable daughter Leah will be doing just that, now that her cancer has gone into remission.

The two were on FOX 29’s “Good Day Philadelphia" on Thursday where Devon talked about how he broke the good news to Leah.

He explained, "For the past 296 days, I’ve been daydreaming about what that feeling would be like, and then finally, I just looked at my daughter and started crying. She knew why I was crying and she asked me ,‘Did I beat up cancer?’ And I told her ‘Yes’ and we just kept hugging and kissing."

Leah, who still has one more round of chemo to go through, talked about wanting to get a pony and about her upcoming party to celebrate her good health ... complete with all the princesses from "Frozen."

Great news for the Still family -- Cincinnati Bengals lineman Devon Still just announced his 4-year-old daughter Leah is WINNING her battle against cancer .... because it's officially in remission!!!

You know the back story ... Leah was diagnosed with Stage 4 neuroblastoma back in June and doctors said she had a 50/50 chance to live.

Despite the fact he wasn't supposed to make the team, the Bengals signed Devon to a contract so he would continue to get health insurance to cover Leah's medical bills.

Leah's been fighting like hell ever since ... and Wednesday, Devon announced the tide has turned in her favor.

"Today we received news from Leah's oncologist that her cancer, stage four neuroblastoma, is officially in REMISSION! After 296 days of daydreaming about what it would feel like to hear the doctors say my daughter is in remission, I finally know the feeling."

"When I look at my daughter all I can do is smile and hug her."

"I'm so proud and blessed to call her my daughter. She has made an impact on me and on the world, at the age of four, that I can only wish to make in a lifetime."

Thank you to my family and friends for the support through all those tough days. Thank you to everyone who has sent a letter to give Leah and our family motivation to keep fighting, a toy that helped Leah get through her days in the hospital, and more importantly a prayer that helped God hear our cries for healing."

He added, "Thank you to the Bengals for taking on my situation and standing by me and my family and for helping to raise money to fight pediatric cancer."

Whitney Houston's mother is mentally prepared for her granddaughter Bobbi Kristina's death ... because she says it's God's will.

Cissy Houston went on "Midday's With Shaila" on WBLS in NY and thanked everyone for praying for Bobbi Kristina -- but also revealed she's finally at peace with whatever happens.

She said, "If He works a miracle, thank God. And if it happens the other way, I'm alright."

As we've reported ... Bobbi was moved to a rehabilitation facility in Atlanta .. where she can get long term care. Watch for Cissy's update on her condition -- the outlook still sounds bleak.

Miley Cyrus has unlocked the secret to free dental advice -- post your X-ray online and let dental experts weigh in, but be warned ... it might not be all good news.

Miley posted the shot on Instagram and it didn't take long for the reviews to pour in, and several blasted her mouth work. We spoke to one reviewer, a dental assistant named Ashley, who gave us this dental Yelp:

-- Miley has veneers on all her upper teeth and had a root canal at some point
-- She might want to get another set of X-rays ... she could have a few cavities
-- Her wisdom teeth need to come out soon (the top ones are impacted and could be a big problem for her other molars if not dealt with soon)

Miley might have taken that advice ... she posted a pic Wednesday of a few teeth she got pulled.

Fun Fact(ish): A recent study said the Tooth Fairy pays West coast kids $4.68/tooth, on average. Don't it spend all in one place, Miley.

Jon Hamm completed a 30-day rehab program for alcohol abuse, just days before the premiere of the last season of "Mad Men."

We're told Hamm checked himself into Silver Hill Hospital in New Canaan, Connecticut at the end of February. It's a high-end facility.

The final season is already in the can.

Hamm's people tell TMZ, "With the support of his longtime partner Jennifer Westfeldt, Jon Hamm recently completed treatment for his struggle with alcohol addiction. They have asked for privacy and sensitivity going forward."