Teddi Mellencamp gave fans a harrowing update amid her ongoing cancer battle on Wednesday.

The 43-year-old reality television personality — who showed off a new wig earlier this week — shared side-by-side pH๏τos to depict how her life has changed in the span of weeks.

In one image, the former Real Housewives of Beverly Hills star had flowing blonde hair and a glowing visage.

A second picture showed the mother-of-three with her natural brunette hair cut close to her scalp, with a huge semi-bald patch stretching from the side to the back.

She captioned the heart-wrenching post, ‘What a difference 4 months makes.’ 

The update comes after Teddi announced in February that she had to undergo emergency surgery to remove several tumors from her brain.

Teddi Mellencamp, 43, gave fans a harrowing update amid her cancer battle on Wednesday, sharing side-by-side pH๏τos to depict how her life has changed in the span of weeks

Teddi compared her patches of sparse hair and marks from her surgeries to the lustrous blond locks she had before. She captioned the heart-wrenching post, ‘What a difference 4 months makes’

In Wednesday’s caption, she continued, ‘Sometimes I am so focused on “being strong” that I forget I am allowed to be sad, cry it out, and feel very alone.’

She added, ‘I love my kids, friends, and family so much and am forever grateful to them but dang, today is one of those days.’

Read More Teddi Mellencamp’s heartbreaking request from her famous father as she plans burial

And the Two T’s In A Pod podcaster tried to be a source of support for others having a similarly hard time.

‘If you are having a bad day where you can’t wait for it to be bedtime so you can star over tomorrow leave me a ❤️ We are not alone,’ she noted.

The message concluded, ‘PS. I have watched Netflix and Hulu, what do I watch next? #overyoucancer.’

Mellencamp also took to her Instagram Stories, where she recorded herself on her daily walk with friends Kyle Richards and Jennifer Leipart.

Teddi’s tortuous cancer journey began when she was first diagnosed with melanoma in 2022. The skin cancer has since metastasized to her lungs and brain.

Along the way, the former Bravo TV personality has been candidly documenting her road to recovery.

Mellencamp showed off a new wig earlier this week, putting on a brave face

The effects of Teddi’s tumors were present for six months before the star, who is the daughter of John Mellencamp, finally sought medical attention. She has been candidly documenting her road to recovery

Teddi shares Slate, 12; Cruz, 10; and Dove, five, with her estranged husband Edwin Arroyave

The effects of Teddi’s brain tumors were present for six months before the star, who is the daughter of musician John Mellencamp, finally sought medical attention.

She has been candid about her physical changes as she’s undergone radiation and immunotherapy.

She’s noted in recent social media clips that she likes her short hair, but wears wigs to conceal bald spots.

Days ago she took to Instagram to share a selfie taken from bed as she posed with a half smile.

In a caption to her one million followers, she wrote, ‘The other side of my head is completely bald. Please refer your fave non-itchy or H๏τ wigs.’