YES to everything mentioned. However, there are 3 types of prostatitis: 1) Acute bacterial prostatitis 2) Chronic bacterial prostatitis 3) Nonbacterial prostatitis.
Frequent urination is a good sign that you have Nonbacterial Pros.
In this case, you may also have pain upon ejaculation as well. The prostate gland is "usually" in a normal state as well. This condition is caused by reflux of sterile (hopefully

) urine into th ejaculatory ducts as well as a result of high pressure voiding. Refluxes can be triggered by spasms of external or internal sphincters.
alpha-blockers will help decrease spasms of the prostate muscle, so you may want to try out some oral Yohimbine (maybe...).
Other things that help are muscle relaxants (mmmm...somas), hot baths, anticholinergics, and antiinflammatory drugs.
Therefore, stay away from the ephedrine/caffeine....etc....You my be able to get away taking the juice still, i don't know.
Saw Palmetto should be included in everybody's 'must have' supplement list IMO, whether they have this condition or not.
BMJ
btw...I don't have this condition.