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Short answer How interstitial cystitis is managed Common questions Related questions Sources**Interstitial cystitis has no single known cause, and researchers believe it comes from a mix of a damaged bladder lining, oversensitive bladder nerves, and inflammation rather than from a bacterial infection.**
The leading explanation is that the protective coating inside your bladder becomes leaky, so substances in urine irritate the bladder wall and keep the nerves in it firing. Pelvic floor muscle tension, mast cell activity, and past pelvic surgery or trauma can add to the pain signals. It is not spread from person to person, it is not caused by anything you did, and antibiotics will not clear it because there is no infection to treat. Certain foods, stress, and hormonal shifts around your period do not cause the condition, but many people find they set off flares. Keeping a short symptom and food diary for two weeks is the most useful first step, because it shows which triggers actually matter for you.
How interstitial cystitis is managed
Common questions
What causes interstitial cystitis?
No single cause has been proven. Researchers link interstitial cystitis, also called bladder pain syndrome, to a bladder lining that lets irritating substances in urine reach the bladder wall, nerves that stay sensitized and signal pain at normal bladder filling, mast cell activity and inflammation, and pelvic floor muscle tension. It is not a urinary tract infection, so antibiotics do not help and urine cultures usually come back negative. It is more common in women and often occurs alongside irritable bowel syndrome, fibromyalgia, and endometriosis. Foods, stress, and hormonal changes do not cause it but can set off flares.