Noun. 1. dark matter - (cosmology) a hypothetical form of matter that is believed to make up 90 percent of the universe; it is invisible (does not absorb or emit light) and does not collide with atomic particles but exerts gravitational force.
Causes of Similar Symptoms to Acute prostate blockage like symptoms. Research the causes of these symptoms that are similar to, or related to, the symptom Acute prostate blockage like symptoms: Introduction.  conditions which cause acute symptoms similar to that when there is a blockage to prostate secretions. See detailed information below for a list of 1 causes of Acute prostate blockage like symptoms, including diseases and drug side effect causes. Â» Review Causes of  Causes.
The prostate gland surrounds the urethra, the tube through which urine passes out of the body. An enlarged prostate means the gland has grown bigger. Prostate enlargement happens to almost all men as they get older. As the gland grows, it can press on the urethra and cause urination and bladder problems. An enlarged prostate is often called benign prostatic hyperplasia (BPH). It is not cancer, and it does not raise your risk for prostate cancer.