Yolanda Foster isn't alone in her Lyme disease battle. In October, three years after revealing her own diagnosis, the Real Housewives of Beverly Hills star attended a Lyme disease event, where she announced that her two youngest children, daughter Bella Hadid and son Anwar Hadid, were also struggling with the illness.

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On Instagram on Tuesday, Foster spoke to fans, revealing her determination to find a cure for Lyme disease, and allow her children to live a healthier life.

"I will walk to the end of the earth to find a cure for my babies so that they can live the healthy life that they deserve to live," Foster wrote, along with the photo below of the family's latest treatments. "#UnitedWeStand #LDI Low Dose Immune Therapy #Round2 #LymeDiseaseAwerenes."

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A photo posted by YOLANDA (@yolandahfoster) on Dec 7, 2015 at 9:37pm PST

While accepting the "Power of One" award at the Global Lyme Disease Alliance gala in October, Foster spoke of her children's struggles.

"This award is for Anwar and Bella. This is my token and my promise to you that I will not allow you to live a life of pain and suffering. I will walk to the end of the earth to find a cure so that you can live a healthy life that you deserve," Foster said, according to a report by E! News. "No child should suffer the way that you do...I thank you both for your extraordinary selflessness during this journey."

For more Yolanda Foster, tune into The Real Housewives of Beverly Hills season six, airing on Tuesdays at 9 p.m. on Bravo.