Women with Interstitial Cystitis or Painful Bladder Syndrome have other conditions such as irritable bowel syndrome and fibromyalgia

"Many women with IC/PBS have other conditions such as irritable bowel syndrome and fibromyalgia. Scientists believe IC/PBS may be a bladder manifestation of a more general condition that causes inflammation in various organs and parts of the body."


source:http://kidney.niddk.nih.gov/kudiseases/pubs/interstitialcystitis/#cause