Thank you all for your support...and get your skin checked." her sister wrote in a final TikTok announcing Pierson's death.

Advertisement

A Minnesota mom who went viral on TikTok for sharing information about her skin cancer diagnosis has died. Kassidy Pierson was just 27.

Pierson, who has an 8-year-old son, regularly posted about the importance of skin cancer screenings on TikTok. Her sister shared a final post last week, telling fans that Pierson had passed.

"I know I'm not the face you want to see," she wrote. "I am [Pierson's] older sister. And so I'm coming on here to let you guys know that she did pass away on Tuesday night."

Woman-Dies-of-Skin-Cancer-After-Years-Long-Battle-GettyImages-493991213
Credit: Getty Images

Pierson's sister said that the TikTok star died next to her fiancé, adding, "She was not alone. She was not in pain."

She continued, "I wanted to also come on and thank you all so much for following and supporting, and I can't tell you the amount of times that she would just break down crying because she couldn't believe how many people just loved her from this platform. So just thank you so much, for all that you have done for her."

Pierson amassed more than 230,000 followers on her TikTok account, which simply read, "currently dying" in the bio. She shared in her posts that she was diagnosed with stage 3 melanoma in 2015 after seeing a dermatologist for a suspicious-looking mole on her thigh.

Pierson later told Buzzfeed that she didn't have any additional treatments after her mole was removed. But a scan performed a year later found that the cancer had metastasized throughout her body, including to her brain. She underwent six years of treatments and surgeries to help manage her cancer.

"I've done many different kinds of treatments, including immunotherapy, chemo, targeted therapies, studies that were available at the time, clinical trials, radiation and multiple surgeries," Pierson said.

One in five Americans will develop skin cancer by age 70, according to the Skin Cancer Foundation, and more than two people in the US die of skin cancer every hour. When detected early, the five-year survival rate for melanoma, the least common but most serious form of skin cancer, is 99%, the foundation says, making regular skin cancer checks crucial.

Pierson's TikToks started out as messages to encourage people to get their skin checked, but she eventually started to reveal more about her own journey. She shared in July that she had started home hospice care to help manage her pain.

Pierson, who regularly added the hashtags #dying and #melanoma to her posts, shared in her final post that she was struggling with vomiting and sweating. She also said that she wouldn't be posting every day, noting that it's "not realistic" for her and considering her declining health.

Pierson told Buzzfeed that she talked openly with her son about her impending death and that she's tried to leave mementos for him in the future. "I am writing letters, making videos and getting gifts for my child to prepare for the moments I won't be around for him," she said. "I want him to know how much he means to me. I know they won't replace who I am or me being in his life. But it will help him know who I am and give him a reminder on those special moments that his mommy is always with him."

Pierson also said that her days were full. "I've been staying busy visiting with as many friends and family as possible," she shared. "My days are booked full, as we don't know how long it'll take me to die. It could be a couple days, weeks, months, or even years. It just depends on the cancer and how fast or slow it moves throughout my body. But I feel good now, and so spending as much time with the ones I love is what I've been doing with my days."

To get our top stories delivered to your inbox, sign up for the Healthy Living newsletter