In his book Gifted Hands, Carson relates that as a youth, he had a violent temper. "As a teenager, I would go after people with rocks, and bricks, and baseball bats, and hammers," Carson told NBC's Meet the Press in October 2015. He said he once tried to hit his mother on the head with a hammer over a clothing dispute, while in the ninth grade he tried to stab a friend who had changed the radio station. Fortunately, the blade broke in his friend's belt buckle. Carson said the intended victim, whose identity he wants to protect, was a classmate, a friend, or a close relative. After this incident, Carson said he began reading the Book of Proverbs and applying verses on anger. As a result, he states he "never had another problem with temper". In his various books and at campaign events, he repeated these stories and said he once attacked a schoolmate with a combination lock. Nine friends, classmates, and neighbors who grew up with him told CNN in 2015 they did not remember the anger or violence he has described. In response, Carson posted on Facebook a 1997 Parade Magazine issue, in which his mother verified the stabbing incident. He then questioned the extent of the effort CNN had exerted in the investigation.
In his autobiography, Gifted Hands, Carson recounted that exams for a Yale psychology course he took his junior year, "Perceptions 301", were inexplicably burned, forcing students to retake the exam. Carson said other students walked out in protest when they discovered the retest was significantly harder than the original examination, but he alone finished the test. On doing so, Carson said he was congratulated by the course instructor who told him the retest was a hoax intended to find "the most honest student in the class". Carson said the professor awarded him $10 and that a photographer for the Yale Daily News was present to take his picture, which appeared in the student newspaper with a story about the experiment. Doubts were raised about this story in 2015 during Carson's presidential campaign. The Wall Street Journal attempted to verify Carson's account, reporting that Yale undergraduate courses were identified with only two digits in the early 1970s, that Yale had offered no course called "Perceptions 301" at the time, and that Carson's photo had never appeared in the Yale Daily News. Carson, while acknowledging the class number was not correct, said: "You know, when you write a book with a co-writer and you say that there was a class, a lot of [the] time they'll put a number or something just to give it more meat. You know, obviously, decades later, I'm not going to remember the course number."
During the CNBC GOP debate on October 28, 2015, Carson was asked about his relationship with Mannatech. He replied, "That's easy to answer. I didn't have any involvement with Mannatech. Total propaganda. I did a couple speeches for them. I did speeches for other people—they were paid speeches. It is absolutely absurd to say I had any kind of relation with them. Do I take the product? Yes. I think it is a good product." Politifact rated Carson's denial of any involvement as "false", pointing to his paid speeches for Mannatech and his appearances in promotional videos in which he favorably reviewed its products, despite not being "an official spokesman or sales associate". When the CNBC moderator commented that Carson was on Mannatech's website, Carson replied that he had not given his permission. Earlier, he had said he was unaware of the company's legal history.
On November 3, 2015, Mannatech said on its website that for compliance with Federal campaign finance regulations, the company had removed all references to Carson before he announced his bid for the presidency.
In financial disclosure forms, Carson and his wife reported income of between $8.9 million and $27 million from January 2014 to May 3, 2015, when he announced his presidential campaign. Over that period, Carson received over $4 million from 141 paid speeches, between $1.1 million and $6 million in book royalties, between $200,000 and $2 million as a contributor to The Washington Times and Fox News, and between $2 million and $10 million as a member of the boards of Kellogg Co. and Costco Wholesale Corp. He resigned from Costco's board in mid-2015, after serving on it for more than 16 years. Carson was Chairman of the Baltimore-based biotechnology company Vaccinogen from August 2014 until the announcement of his US presidential bid in May 2015. Carson had previously served on Vaccinogen's Medical Advisory Board.
In January 2015, The Weekly Standard reported that the Draft Carson Committee had raised $13 million by the end of 2014, shortly after Carson performed well in a CNN/ORC poll of potential candidates in December 2014, coming second in two different versions. He polled 10% to Mitt Romney's 20%, but in the same poll with Romney removed from the list, Carson polled 11% to Jeb Bush's 14%. The Wall Street Journal mentioned that the Draft Carson Committee had chairmen in all of Iowa's 99 counties, and that Carson had recently led two separate Public Policy polls for the state of Pennsylvania.
On May 2, 2015, Carson proclaimed that in two days he was going to make a major announcement on his decision on whether to enter the Presidential Race. In an interview with Cincinnati TV station WKRC (AM) on May 3, 2015, Carson accidentally confirmed his candidacy for president. The interview was also broadcast live on WPEC. The next day, May 4, 2015, at the Music Hall Center for the Performing Arts in his home town of Detroit, he officially announced his run for the Republican nomination in the 2016 U.S. presidential election. The announcement speech was preceded by a choir singing "Lose Yourself" with Carson sitting in the audience. After the song, Carson took the stage and announced his candidacy alongside a speech on his rags to riches life story, at one point stating: "I remember when our favorite drug dealer was killed."
In October 2015, the Super PAC supporting Carson, The 2016 Committee (formerly the Draft Carson Committee), announced it had received donations in mostly $100 increments from more than 200 small businesses around the country over the course of one week. Fox Business reported that "Carson's outsider status is growing his small business support base." Ben Walters, a fundraiser for The 2016 Committee, expressed optimism about Carson's small business support base: "It's unbelievable the diversity of businesses that we are bringing on. We are seeing everything from doctors' offices and folks in the healthcare profession to motorcycle repair shops and bed and breakfasts."
The campaign brought considerable attention to Carson's past. CBS News described Carson's narrative of "overcoming impossible odds as a child growing up in an impoverished, single-parent household to reach international prominence as a pediatric neurosurgeon" as "a key part of his presidential campaign". The Wall Street Journal said the narrative came under "the harsh scrutiny of presidential politics, where rivals and media hunt for embellishments and omissions that can hobble a campaign". CNN characterized the core narrative as "acts of violence as an angry young man", followed by a spiritual epiphany that transformed Carson into the "composed figure" he now portrays. Media challenges to a number of Carson's statements included allegations of discrepancies between documented facts and certain assertions in his autobiography Gifted Hands—allegations dismissed by Carson as a media "witch hunt". In November 2015, the Detroit Free Press republished an article from 1988 "to try to bring some clarity to the claims currently being brought into question".
In November 2015, Carson's campaign aired a 60-second TV advertisement in which excerpts from Carson's stump speech were intercut with a rap by an artist named Aspiring Mogul. They spent $150,000 on the ads, which were aired in Atlanta, Detroit and Miami. Carson defended the ad, saying "Well, there are people in the campaign who felt that was a good way to do things ... I support them in doing that, but I probably would have taken a little different approach." Later, he said the advertisement was done without his knowledge, that "it was done by people who have no concept of the black community and what they were doing", and that he was "horrified" by it.
Statements that Carson made regarding foreign policy called into doubt his familiarity with the domain. The New York Times reported in 2015, "Carson has acknowledged being something of a novice on foreign affairs." Regarding the Ukrainian crisis, Carson would send arms to Ukraine to aid it in its fight against pro-Russian rebels. He also believes the Baltic states should "get involved in NATO" (apparently unaware they are NATO members).