The FULL INSIDE STORY of PRISCILLA’s extreme drastic plastic – specialists tell The ENQUIRER!

Behind her shockingly distorted features, Priscilla Presley is hiding a potentially life-threatening secret – she was once poisoned by a deadly Botox substitute that still remains in her body, say top docs! The 69-year-old actress stunned onlookers with her painfully inflated pillow lips, pumped-up cheeks and scarring at the corners of her mouth during a recent appearance in Las Vegas.

Now experts tell The National ENQUIRER that the “Naked Gun” star is ruining her looks with repeated cosmetic procedures, including work on her face, neck, cheeks and lips.

The former “Dancing with the Stars” contestant has already been victimized by one smoothtalking quack – an unlicensed “doctor” who injected her with his “miracle anti-wrinkle serum.”

The serum turned out to be industrial, low-grade silicone, similar to what’s used to lubricate auto parts! Cruel con man, Daniel Serrano – nicknamed Dr. Jiffy Lube – was busted and sent back to his native Argentina. But Priscilla’s disfigured face prompted one critic to comment that her puffy appearance “resembled a bulldog bitten by wasps.”

The non-FDA approved product used by Serrano, which he smuggled into the country, took a terrible toll on his clients. Many suffered lumps, paralysis and holes in their faces, while Priscilla reportedly required corrective work after the injections – which cost over $600 each – and left her lips horribly ballooned in 2003.

A spokesperson for the ex-wife of the late Elvis Presley claimed “everything is well now,” but according to Dr. Richard Fleming, M.D., a board-certified plastic surgeon, Priscilla may have been “permanently damaged” by the filler. “You can never remove it all,” Dr. Fleming, who has not treated Priscilla, told The ENQUIRER.

Another top plastic surgeon, Michigan-based Dr. Tony Youn, said he believes Priscilla most likely suffered scarring, inflammation, infection and skin bumps, as a result of Dr. Jiffy Lube’s deception. “These would cause her face to move abnormally and look stiff and unnatural,” said Dr. Youn, who has not treated Priscilla.

“Also, too much Botox can cause the muscles of the face to move too little and in the worst case, make the person look like he or she had a stroke!” Dr. Youn and others agree that members of Priscilla’s family, including daughter Lisa Marie, 46, have good reason to fear she has gone overboard with the cosmetic enhancements. “The real question isn’t so much what has Priscilla had done – but what she hasn’t had done,” Dr. Youn told The ENQUIRER.

“She’s as plastic-looking as any celebrity in recent memory.”

He believes the once fresh-faced beauty has undergone a number of procedures, including a facelift, lip plumping and injection of fillers, her smile lines, forehead and crow’s feet.

Dr. Steven Svehlak, a Los Angeles–based plastic surgeon who hasn’t treated the “Dallas” star, believes Priscilla has also had skin resurfacing treatments, such as laser treatments, facial peels or both.

Priscilla “represents what we don’t like about plastic surgery,” New York plastic surgeon Dr. Matthew Schulman told The ENQUIRER. “It’s all greatly overdone.”

While no one is suggesting that Priscilla is addicted to surgery, she clearly knows the dangers of addiction. Her exhusband, Elvis, was addicted to the opioid Demerol and downed amphetamines and sleeping pills for years prior to his death in 1977. And experts warn Priscilla that enough is enough, or she risks even more damage!

“There is a definite danger of overdosing with Botox which can cause difficulty in speech and swallowing,” Dr. Dennis Hurwitz, M.D., clinical professor of plastic surgery at the University of Pittsburgh, told The ENQUIRER.

“We use Botox to paralyze the muscles in the forehead to make that area smooth, but if the same toxin gets into the system it can have a dangerous effect on other parts of the body.”

Added Dr. Fleming, “She had such beautiful skin in her youth, but too many facial procedures have taken their toll. “There’s also the danger of bad or botched cosmetic surgery that can interfere with daily functions, such as smiling and eating. Bad plastic surgery or too many fillers in the wrong places can wreak havoc with the normal function of your facial muscles.

“It can cause them not only to become paralyzed, but to waste away or atrophy so that they no longer function at all. So you can’t smile or eat.” Instead of finding the Fountain of Youth, the aging actress has been compared to Batman’s bizarre-looking enemy, The Joker.

Dr. Payman Simoni, a Beverly Hills plastic surgeon, added: “I think her face has been damaged beyond repair by the injections.”