I do not have P.D but had voiding problems so what your doctor says on not blaming everything on P.D is very true.It may be P.D but it may not.I have seen a varirty of consulants and a herbalist and this is what I have learnt.If you have this problem and it is not an infection do the following.Slowly give up drinking tea and coffee as they irritate the bladder.(Slowly drop one cup a day or you will get one h*** of a headache)Do not drink fruit drinks or wine as too acid.Roobosh or redbush tea is a good and o.k Available in Health shops and Supermarkets in UK ,Avoid spicey food.When I am very bad I can only drink bottled water as even the chlorine causes problems.I know this is a drag but I have done it for the last 20 years an it is well worth it.