Acute cystitis commonly has the pain you have described, and commonly goes away on it's own after several days...your doctor's guidance seems sound to me to address this as a possibility, first.
Late radiation cystitis following radiation therapy for PC--which would be chronic, not acute--occurs anywhere from 6-months to 20-years after RT, with an average latency of 35 months...some people will tell you that late-term RT SEs are trivial, but your particular issue (just one of several possible late-term SEs from RT) has an incidence rate of roughly 1-in-5 (link
)...I don't think that late-term side effects from radiation therapy for PC are trivial; my observation (also the topic of several medical society editorials) is that they are understated...but this is not a topic for your post/your case which is occurring right now.
Eliminate the acute first (the pain is more often associated with acute, the tell-tale with chronic is the blood but less often the pain)...take some ibuprofen, drink lots, pee frequently, and hold a hot water bottle against the
location of pain for some relief. It is plausible that drinking cranberry juice could help to prevent cystitis...many swear by it, so I'd say it's worth a try...be sure to tell your doctor everything you've done when you speak to him next.
Post Edited (Blackjack) : 8/2/2019 1:27:28 PM (GMT-6)