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.
Possible causes of bladder outlet obstruction might include: 1  Enlarged prostate, also known as benign prostatic hyperplasia (BPH) â this is the most common cause of bladder outlet obstruction in men. 2  Scarring of the urinary channel (urethra) or bladder neck, as a result of injury or surgery.