Yolanda Foster Sends Avril Lavigne Support, Blogs About Own Lyme Disease Battle: "I Am a Determined Warrior"

The Real Housewives of Beverly Hills star Yolanda Foster is sending her support to her fellow Lyme disease "warrior," Avril Lavigne. The 30-year-old "Rock n Roll" and "Girlfriend" singer revealed in a People magazine interview published on Wednesday that she has been battling the ailment, which had left her bedridden for five months. Foster, 51, suffers from a chronic version of the illness, which began as a bacterial infection obtained from a tick bite, for more than three years.