Symptoms of glioblastoma as 90 Day Fiancé star Chuck Potthast dies following cancer battle

90 Day Fiancé star Chuck Potthast has died at the age of 64.

The father of Elizabeth 'Libby' Castravet, Chuck featured on season five of the TLC reality show.

Elizabeth and her now-husband Andrei first appeared on the show in 2017, as well as the spin-off, 90 Day Fiancé: Happily Ever After?

Taking to Instagram on Sunday (November 23), Elizabeth announced the heartbreaking news of her dad's death in a joint post with husband Andrei.

"Two weeks ago, tragedy struck our family and it has left us completely shattered," she wrote.

"My sweet, loving, and caring dad went to heaven. We’re trying to figure out how to navigate our lives and move forward without him.

"Please respect our privacy during this extremely difficult time."

Chuck had been battling glioblastoma, a form of brain cancer, since 2022.

He gave updates on his health via social media, including that he underwent surgery for a hernia in September, which turned into an eight hour operation to address complications from previous cancer treatments.

Chuck ran a rental property and home flipping business, CMP Capital Investments.

He and ex-wife Pamela shared seven children together; Elizabeth and her siblings David, Charles, Daniel, Michael, Jennifer and Becky.

Becky also paid tribute to her father via Instagram, sharing a photo of them embracing on her wedding day with the caption: "Two weeks ago on this day my world became distorted into a place I don’t understand. My father Chuck went home to be with The Lord. The pain is still more than I can bare so this is all I can write."

What are the symptoms of glioblastoma?

Glioblastoma is a fast-growing, invasive cancer that starts as a growth of cells in the brain or spinal cord, as per Mayo Clinic.

It can develop at any age but mainly affects 'older adults.'

More than 12,000 glioblastoma cases are diagnosed each year in the United States, according to the American Brain Tumor Association.

Mayo Clinic has listed 11 symptoms to look out for, which can manifest both physically and mentally.

The first symptom is a headache, especially ones that hurt the most in the morning.

People may also notice vision changes, including blurred vision, double vision or loss of peripheral vision.

Nausea, vomiting and difficulty with speech could also be signs of glioblastoma.

Seizures, especially in those who've never had seizures before, could also be a red flag.

Having trouble with balance or coordination, experiencing muscle weakness in the face, arms or legs and a reduced sensation of touch might also be a sign.

Other symptoms of glioblastoma might include personality changes, irritability, confusion and memory loss.

If you have any concerns, contact your doctor.