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.
Most men experience prostate gland enlargement as they age. This is a condition called benign prostatic hyperplasia (BPH). The prostate gland is underneath the bladder. When it gets bigger, it can block the flow of urine through the urethra, which is the tube that carries urine from the bladder out through the penis. This can cause problems with urination.