In many cases of interstitial cystitis, mast cells are raised in the bladder and play a big role in the unpleasant symptoms of an IC flare. Modern medicine likes to put names on symptoms but sometimes this may not describe the real issue well.
Interstitial cystitis is often a diagnosis of exclusion and similar to syndromes such as Irritable Bowel Syndrome (IBS) it is a functional disorder with an array of symptoms. The condition in itself could even be a symptom in itself. In the case of raised mast cells the question is whether it is really IC or could it be mast cell activation disorder (MCAD)?