The present invention provides an animal model for use in the development of a preventive or therapeutic agent for human chronic nonbacterial prostatitis, in particular a nonbacterial prostatitis nonhuman animal model mimicking the pathology of human chronic nonbacterial prostatitis. The nonbacterial prostatitis animal model is prepared by injecting hydrochloric acid beneath the prostatic capsule and exhibits prostate tissue damage and lower urinary tract disorders that are characteristically observed in human chronic nonbacterial prostatitis.
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