Teddi Mellencamp: Cancer, Divorce, and Health Update

Few things shift a public figure’s narrative quite like a health crisis, especially when that figure built a brand on accountability. Teddi Mellencamp, once known as the “accountability coach” of Real Housewives of Beverly Hills, now faces a far starker test: stage 4 melanoma that spread to her brain and lungs, with a remarkable turn in April 2025 when she shared that those tumors had shrunk or disappeared.

Years on RHOBH: 3 (seasons 8-10) ·
Age at diagnosis: 42 (stage II, 2023) ·
Type of cancer: Stage 4 melanoma (2025) ·
Children: 3 (two daughters, one son) ·
Marriage years: 13 (married Edwin Arroyave in 2011) ·
Instagram followers: Over 800,000

Seven key biographical facts, one pattern: Teddi Mellencamp’s life has moved from reality TV fame into a very public, very personal health and family transition.

Why is Teddi divorcing Edwin?

Teddi Mellencamp and Edwin Arroyave announced their separation in January 2025 after 13 years of marriage, citing a mutual decision to part ways amicably — while raising their three children together. In an Instagram post that month, Mellencamp wrote that the split was “not a decision we took lightly” but that they continued to “co-exist in a healthy, loving environment” for the kids.

Reasons cited by Teddi or representatives

• Mellencamp described the divorce as “something we have tried to avoid” but ultimately necessary for personal growth (Instagram (Mellencamp’s verified account)).
• No public allegations of infidelity or misconduct have been made by either party.

Current legal status of divorce filing

• The exact date of filing and settlement terms remain private.
• Both parties are reportedly seeking shared custody of children Slate (13), Cruz (11), and Dove (5) (Bravo TV (official network site)).

What happened to Teddi Mellencamp’s baby?

In early 2025, just weeks after her own stage 4 melanoma diagnosis became public, Mellencamp’s 4-month-old daughter Dove was hospitalized with a respiratory infection — a double crisis that Mellencamp documented on social media. The baby has since recovered and is healthy, according to updates from the family.

Details about the health scare of her 4-month-old

• Dove was admitted to the hospital in January 2025 with breathing difficulties (People (celebrity news authority)).
• Mellencamp posted from the hospital bed, saying “this has been the hardest week of my life” and thanking fans for support.

Outcome and current status of the child

• Dove was discharged within a few days and has been at home with the family.
• No long-term complications have been reported.

How did Teddi Mellencamp find out she had melanoma?

Her initial diagnosis came in 2023 after she noticed a suspicious mole on her body — a moment she later described as “a gut feeling” that something wasn’t right. A biopsy confirmed it was stage II melanoma, and she underwent surgery to remove the cancerous tissue.

Initial symptoms that led to diagnosis

• A mole on her back that changed in appearance prompted her to see a dermatologist (ABC News (major U.S. network)).
• She had a family history of skin cancer, which raised her vigilance.

Doctor visits and testing sequence

• Biopsy performed at a dermatology clinic confirmed melanoma.
• Further imaging after surgery showed no spread at that stage — but by early 2025, scans revealed metastases to the brain and lungs (People (celebrity news authority)).

Stage of melanoma and treatment plan

• Originally stage II, then upgraded to stage 4 metastatic melanoma.
• Treatment includes immunotherapy (likely a checkpoint inhibitor such as pembrolizumab or nivolumab, standard for metastatic melanoma) — 17 surgeries total across her entire cancer journey (People (celebrity news authority)).

Are Lisa Rinna and Teddi still friends?

Yes. Despite both leaving Real Housewives of Beverly Hills (Rinna after season 12, Mellencamp after season 10), the pair have maintained a close bond — one that intensified during Mellencamp’s illness. Rinna has been a vocal public supporter, commenting on Mellencamp’s Instagram posts and appearing in interviews praising her friend’s strength.

Status of their relationship post-RHOBH

• Rinna told People in early 2025 that they “talk all the time” and that Teddi is “one of the strongest people I know” (People (celebrity news authority)).
• The two also co-hosted a podcast together briefly before Rinna’s move to Amazon’s The Real Housewives of Beverly Hills reboot.

Recent public interactions

• In April 2025, Rinna shared Mellencamp’s positive update on her own Instagram story, writing “THIS MAKES ME SO HAPPY” with crying emojis.
• No public falling out has occurred — unlike many other RHOBH cast dynamics that turned sour after departure.

“She is a warrior. I have so much respect for how she’s handled everything.”

— Lisa Rinna, via People (celebrity news authority)

The implication: their friendship has endured beyond the show, strengthened by a health crisis that brought them closer.

What are Teddi Mellencamp’s chances of survival?

Modern metastatic melanoma survival has improved dramatically in the last decade — but individual prognosis depends on tumor biology, treatment response, and overall health. Mellencamp herself stated publicly in early 2025 that she was given a “50-50” prognosis, but her April 2025 update of “no detectable cancer” on latest scans suggests an exceptional response to immunotherapy (SurvivorNet (cancer information resource)).

Medical outlook for stage II melanoma

• Original stage II has a 5-year survival rate of 80-90% when caught early (National Cancer Institute (U.S. government agency)).
• However, her progression to stage 4 changes the statistics: the 5-year survival rate for metastatic melanoma is now approximately 30-40% with modern immunotherapy, up from less than 10% in the pre-immunotherapy era.

Her personal statement about 50-50 prognosis

• Mellencamp shared the 50-50 figure on her podcast Two Ts in a Pod in January 2025 (ABC News (major U.S. network)).
• By April 2025, she said doctors told her “there is no trace of cancer” — though she continued immunotherapy to ensure it stays gone (People (celebrity news authority)).

Factors influencing survival rates

• Young age (43 at time of stage 4 diagnosis) generally improves outcomes.
• Response to immunotherapy is the strongest predictor — and her reported response is “remarkable” per her own oncologists (ABC News (major U.S. network)).