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    Exclusive: Charles Spencer Says He Feels Princess Diana's Undiagnosed ADHD Gave Her One Powerful Advantage in Royal Life

    The late royal's brother tells 'Marie Claire' why her potential neurodivergence explained some of her "extraordinary public life."

    Kristin Contino's avatar
    By Kristin Contino
    Published 4 October 2026 In News

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    Princess Diana wearing a yellow and pink suit talking to a man at a hospital
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    Charles Spencer has been open about his own late-in-life ADHD diagnosis, and says he believes Princess Diana was also neurodivergent in his new book, Swan Song: Diana, My Sister. Speaking to Marie Claire, the 9th Earl Spencer shares that while his sister struggled with certain aspects of royal life, he thinks potentially having ADHD actually gave her a leg up in some ways.

    “I think it enhanced the natural empathy in her,” Spencer shares. “I think that's where I see her ADHD explaining some of her extraordinary public life.”

    In the book, Earl Spencer writes about how Diana had trouble concentrating or sitting still in school. Her learning difficulties were frequently pointed out by teachers, but since “such things were poorly understood in England” in the ‘60s and ‘70s, she “was never even tested," Spencer notes.

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    Princess Diana visits London Lighthouse, a center for people affected by HIV and AIDS, in 1996.

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    People with ADHD are able to focus on their special interests intensely, and when asked if he thought Diana was able to hyperfixate on her charity work Earl Spencer replies, “I think yes, she did.
I don't know if it's hyperfocused, but certainly she had an ability to really focus in on the minutiae of the causes that would be very challenging to a normal person from a royal heritage, if you see what I mean.”

    “I think she cut through the conventional way of looking at causes to see the bits that really mattered,” he adds.

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    Spencer notes that getting his own diagnosis as an adult helped life "make more sense," and he reflects on whether his sister's story could have been different if she'd received treatment for ADHD.

    "Well, all I can say about that is that having a late diagnosis for myself, I found it incredibly helpful to understand life better,” he shares. “And the reactions that you feel as an ADHD person, without explanation, can be quite overwhelming. And I think if you can just pause and think, ‘Okay, I have this neurodivergence and maybe that's why I'm feeling this,’ I'm sure that's helpful to most people.”

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    Princess Diana walking through a minefield wearing protective gear

    Diana walks through a minefield in Angola during a January 1997 trip to highlight the effects of landmines.

    (Image credit: Getty Images)

    Rejection Sensitivity Dysphoria (RSD) is a sudden emotional pain triggered by a real or perceived rejection, and it's something most people who have ADHD experience. When asked if he thought Diana suffered with RSD, Spencer tells Marie Claire that one area of royal life Diana particularly struggled with was the overwhelming press attention she received, especially in the late '90s when the coverage turned negative.

    “It's interesting, actually, because I’m only using myself as an example with Diana in mind—this is not about me,” Spencer says. “But in the past, when I was slaughtered in the press for a day or a week, it felt like a bereavement, which, of course, is illogical. But it cut to the bone.”

    Earl Spencer recalls that people would try to console him, but it didn’t work. “And friends would say, ‘Oh, why bother, you know…today's newspapers, tomorrow's fish and chip wrapping,’ which is a very English idea that, you know, it's something that's going to be absolutely irrelevant the next day.”

    “But I think for somebody with ADHD, like Diana, to be roundly criticized in the worst sections of the media really, really hurt her very badly indeed,” he shares.

    Explore More
    Diana
    Kristin Contino
    Kristin Contino
    Senior Royal and Celebrity Editor

    Kristin Contino is Marie Claire's Senior Royal and Celebrity editor. She's been covering royalty since 2018—including major moments such as the Platinum Jubilee, Queen Elizabeth II’s death and King Charles III's coronation—and places a particular focus on the British Royal Family's style and what it means.

    Prior to working at Marie Claire, she wrote about celebrity and royal fashion at Page Six Style and covered royalty from around the world as chief reporter at Royal Central. Kristin has provided expert commentary for outlets including the BBC, Sky News, US Weekly, the Today Show and many others.

    Kristin is also the published author of two novels, “The Legacy of Us” and “A House Full of Windsor.” She's passionate about travel, history, horses, and learning everything she can about her favorite city in the world, London.

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