thank you for your query.
cystoscoopy with hydrodistension is a diagnostic and therapuetic investigation for interstitial cystitis
Many people with IC have noted an improvement in symptoms after a bladder distention has been done to diagnose the condition.in some cases it may increase capacity and interfere with pain signals transmitted by nerves in the bladder. Symptoms may temporarily worsen 4 to 48 hours after distention, but should return to predistention levels or improve within 2 to 4 week
hence i recommend you discuss this procedure with your urologist
and clear your doubts.doing this procedure will definately help you
wishing you good health