I find my symptoms such as frequent urination will become worse in cold days
This is quite simple. Prostatitis or not, you will naturally urinate more in lower temperature. https://www.scienceabc.com/humans/why-do-we-urinate-more-when-were-cold.html Frequent urination would probably makes you suffer more.
With temperature dropping, the sympathetic nerve become more exciting. The prostate gland shrinks while crypt and blood vessel expands. This results in chronic congestion, which increases the internal pressure within the urethra and the risk of a backward flow.
The change of the urethra intensifies the blockage of prostate fluid and it triggers prostatitis with symptoms of:
- frequent and urgent urination
- painful urination
- abdominal pain
- pain in testicles