What the heck is interstitial cystitis really?

IC: It is a condition in the bladder that causes a variety of bladder, urinary symptoms, usually associated with, freq, urgency, pain....No classic test for ic, is a diagnosis of exclusion....Some refer to it as fibromyalgia of the bladder....Not a medical term though....

Urine bladder : Interstitial cystitis reputed to be overactive bladder w. Urgency ; frequency. Officially cause unknown ; infection not associated. I have seen in women w. Sacroiliac joint hypermobility disorder from mechanical injury, like lifting, multiple childbirths, trauma to pelvis, ; who have inherited joint hypermobility syndrome. Imo cause is parasympathetic overactivity due to neural impingement.