Yolanda Foster continues to search for a cure for Lyme disease.

Yolanda Foster Thanks 'True Friends' Amid Lyme Disease Battle

Three years after her Lyme disease diagnosis, the Real Housewives of Beverly Hills star remains active on social media, attempting to spread awareness for the disease, which has left her unable to read and write.

On Sunday, Foster wrote, "It takes a village, please pass it on........ #WeMustFindACure #LymeDiseaseChallenge #TakeABiteOutOfLyme I challenge @Lisavanderpump @kylerichards18 @lisarinna @eileendavidson @brandiglanville2 @kimrichards11 @bravoandy @dr_Oz."

RHOBH's Yolanda Foster Continues Her Battle With Lyme Disease

During filming on season five of The Real Housewives of Beverly Hills, Foster suffered a Lyme disease relapse, and has been unable to get back on track in the months since. In a Bravo blog in January, Foster opened up about the devastating turn of events.

"I have lost the ability to read, write, or even watch TV, because I can't process information or any stimulation for that matter," Foster explained to fans. "It feels like someone came in and confiscated my brain and tied my hands behind my back to just watch and see life go by without me participating in it."

Foster went on to make a vow to fans, promising to do what she could to spread awareness.

"I will made it my life mission to figure this out, because nobody desrves to suffer this way in 2015," she wrote.

For more Yolanda Foster, tune into The Real Housewives of Beverly Hills' Unseen Moments episode, airing tonight at 8 p.m. on Bravo.

Tags: yolanda foster The Real Housewives of Beverly Hills Bravo Reality TV