The star speaks about her battle with the disease.\r<br>\r<br>The star speaks about her battle with the disease. My thoughts on celebrities who have lupus and a little rant. Do you keep your chronic illness private or are you .\r<br>\r<br>The 23-year-old entertainer got candid on the talk show.\r<br>\r<br>The 23-year-old, whos battling lupus, opened up about receiving chemotherapy treatment.\r<br>\r<br>Now that Selena Gomez has revealed her lupus diagnosis, she is letting everyone know even more details about her secret, which she kept for a few years.