President Obama's former doctor says Democratic Party nominee Hillary Clinton should have a neurological exam, indicating the checkup would ensure she isn't losing her cognitive abilities due to her history of brain injury.

Dr. David Scheiner, Obama's physician for 22 years, told CNN Tuesday that a two-page note Clinton provided from her doctor after follow-up testing in 2013 is simply not enough to show she's fully recovered.

"There are a number of questions I have. First of all, she's almost 68 years old. While I think that medical letter was well written and was very professional ... it's not enough. For example, she is on Coumadin, a medication to prevent blood clots. You have to monitor that. It says she's being monitored regularly. I'd like to know how well she is being controlled. That's a difficult drug to use.

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Scheiner continued, "I think she should have had a neurological examination, a thorough neurological examination in 2016. We know what happens to football players who have had concussions, how they begin to lose some of their cognitive ability."

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In 2008, Scheiner provided a letter for Obama saying the future president was in excellent health while he was campaigning for the White House.

Scheiner also said GOP nominee Donald Trump should release medical records with detailed information about the candidate, rather than a quickly drafted note from a doctor.

"I think you need real details. I think you need actual medical records. Just somebody making a few statements about 'astoundingly excellent,' that's not good enough," he continued. "I'd like to know his height and weight, to know what his BMI is. He looks a little bit overweight to me."

Scheiner said he thinks both nominees "should release their records."

Trump raised the issue to a new level, CNN reported, by challenging Clinton to release "detailed medical records," insisting he would have "no problem" with his own becoming public.

Trump tweeted: "I think that both candidates, Crooked Hillary and myself, should release detailed medical records. I have no problem in doing so! Hillary?"

As WND reported, many physicians, based on publicly available information have raised concerns about Clinton's health. Among them are:

Dr. Jane Orient, M.D., executive director of the Association of American Physicians and Surgeons, said images of Clinton being helped up stairs and propped up, and videos showing odd, seizure-like head movements require an explanation to voters, she contends. The author of "Emerging Diseases: Protecting Your Family from Pandemics, Viral Threats, and Rogue Vaccines" noted the "vituperation and anger" that she's faced for raising questions. "I'm not making a diagnosis," she told WND on Monday. But "I can look at the video. You can look."She said for a medical professional to simply ignore the evidence would be "completely reckless." Meeting someone with these symptoms personally would require a "How are you?" she said. "These are not ridiculous questions."

Dr. Lee Hieb, author of "Surviving the Medical Meltdown: Your Guide to Living Through the Disaster of Obamacare," agreed. "They made a huge deal about [Sen. John] McCain because of his melanoma," she told WND. "Melanoma doesn't give you dementia!" She said the images and videos are evidence that should be reviewed and explained to voters, contending Clinton is "not being forthcoming.""If she doesn't want the American people informed … we know where she stands."Citing Clinton's previous concussion, Hieb said such injuries can cause long-term side effects, seizures, personality changes and cognitive deficits.

The Fox News medical "A-Team" of Dr. Marc Siegel and Dr. David Samadi had questions. "In 2008 … I looked over a thousand pages of John McCain's records because of a melanoma he had 10 years ago. What about Hillary? In 2009, a severe fall. She breaks her elbow. In 2011, she boards a plane, falls. In 2012, she has a severe concussion which Bill Clinton says took her six months to recover from," Siegel said. He continued: "Then she ends up with a blood clot in the brain and a lifetime of blood thinners. Just that point alone – if she's prone to falling, you can see from that picture up there that it looked like she can barely get upstairs without two people carrying her. Guess what if she falls and hits her head? She'll get a blood clot."

Samadi added: "The picture going up the stairs speaks a million words. Is she fatigued? Is she dehydrated? One of the main reasons she fell in 2012 and had the concussion was severe dehydration. They're holding her and going up the stairs. So she may be really dehydrated, she may have arthritis, she may have back pain, she may have fallen again. We don't know."

Dr. Drew Pinsky's television show on the HLN cable network, "Dr. Drew on Call," was canceled after he raised questions about Clinton's health in an interview on KABC-AM in Los Angeles.

Dr. Gerard Gianoli argued that if the concerns were about Donald Trump's health, establishment media would spotlight the issue. He wrote:

Imagine, if you would, that tomorrow Donald Trump suffers a concussion. Suppose he trips on a flight of stairs, falling down and hitting his head. The head injury is so severe that he is unconscious for a time and has to be hospitalized for a week. After getting out of the hospital, the Trump campaign tells us that he has fully recovered and that there are no lingering effects of the head trauma. During the following weeks, he is seen in public to wear glasses with a Fresnel lens on one side. He also seems to have trouble maintaining his balance, loses his thoughts in the middle of speeches, and has episodes of spasmodic movements suggestive of seizures. In this imaginary scenario, would it surprise anyone if the media became skeptical and pressed for release of Mr. Trump's medical records? Would it surprise anyone if the Clinton campaign made an issue of Mr. Trump’s health status during speeches and in TV ads? Would the media cry 'foul' over the Clinton campaign doing so? I think the answers to these questions are self-evident. The media and the Clinton campaign would be all over this like white on rice, and no one would question the appropriateness of their actions. To my knowledge, Mr. Trump has had no such issues with his health. However, Mrs. Clinton has had multiple problems – some she has revealed and some that she has not revealed.

Gianoli, in private practice in Covington, Louisiana, and a faculty member at Tulane University School of Medicine, has pioneered treatments in his specialty areas. He has been granted the American Academy of Otolaryngology's Honor Award, among others.

Gianoli was pointed in asking: "What do we know about Mrs. Clinton’s health? We know that she has suffered two deep vein thromboses and an episode of cerebral venous thrombosis. Blood spontaneously clotting within one’s veins on three separate occasions is not a good thing. In fact, it is life-threatening. This tells us that she has a hypercoagulable state requiring the use of Coumadin (a 'blood thinner') for the rest of her life to try to prevent this from happening again. While Coumadin may prevent future blood clots, it can also lead to life-threatening hemorrhage if she has any future trauma."

He added: "We also know that she suffered a concussion and, according to her husband, she took 6 months to recover. How do we know she recovered? If she was a high school athlete, she would have had mandatory neuropsychological testing before being allowed to participate in sports again. Given that being the leader of the free world is more important than playing goalie for the local high school, why is the mainstream media not demanding to see Mrs. Clinton’s post-concussion testing?"

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He noted her own supporters have talked about her "right transverse venous sinus thrombosis … a blood clot that formed in one of the two major veins that drain blood from the brain."

The symptoms are "headaches, visual problems and dizziness/balance problems."

"We know that Ms. Clinton has had all three of these. Less commonly known are 'brain fog,' problems with concentration and short-term memory problems. Sounds familiar?" he questioned.

Clinton herself has talked about her "serious concussion," and her husband said it took months for her to recover.

And, it has been revealed that one of her top aides extensively researched a drug used to treat Parkinson's and Alzheimer's diseases.

While he worked for her at the State Department, Clinton Deputy Chief of Staff Jake Sullivan investigated the drug Provigil, according to an October 2011 emails sent to Clinton.

In one email, Sullivan tells Clinton the military administers Provigil, a drug that's also used to treat narcolepsy and sleep-wake disorders.

He said doctors often prescribe Provigil to treat "excessive sleepiness in patients with Parkinson's, Alzheimer's and multiple sclerosis."

Sullivan further explained that Modafinil, a generic name for the drug, "gained attention in the medical community because it is the first effective stimulant with no significant potential for abuse" and "it can be used for two to three day stretches at a time, with few known side effects and little risk of addiction."

WND had some of the earliest reports on her health, reporting early in 2016 Clinton was refusing to explain why she was wearing glasses fitted with Fresnel prisms.

After one of her troubling coughing fits during a speech in New York City, Clinton left Chicago wearing her normal contact lenses. But at a photo opportunity shortly later in Las Vegas, she was observed once again wearing the thick, black glasses fitted with Fresnel prisms, suggesting she was experiencing another bout of double vision.