Dictionary

pruritus ani See anal itching.

PSA Prostate specific antigen. See prostate specific antigen test.

PSC Primary sclerosing cholangitis.

pseudo- Prefix indicating a medical condition that resembles another condition but appears to have different causes, as in pseudoseizure (a seizure-like episode that may not show up as unusual electrical activity in the brain).

pseudodementia A severe form of depression that results from a progressive brain disorder in which cognitive changes mimic those of dementia.

pseudogout Inflammation of the joints that is caused by deposits of calcium pyrophosphate crystals, resulting in arthritis, most commonly of the knees, wrists, shoulders, hips, and ankles. Pseudogout usually affects only one or a few joints at a time. True gout is due to a different type of crystal, which is formed by the precipitation…

pseudo-Hurler polydystrophy See mucolipidosis III.

pseudomelanosis coli See melanosis coli.

pseudo-obstruction, intestinal See intestinal pseudo-obstruction.

pseudo-obstruction, myopathic Intestinal pseudo-obstruction that is caused by damage to muscle cells in the walls of the bowel.

pseudo-obstruction, neuropathic Intestinal pseudo-obstruction that is caused by damage to nerve cells in the walls of the bowel.

Prostate enlargement typically results from benign prostatic hyperplasia (BPH), a common, non-cancerous overgrowth of prostate tissue in aging men.​ Causes and Differentiation BPH stems from hormonal changes, particularly increased dihydrotestosterone (DHT), leading to glandular and stromal proliferation that compresses the urethra. While rare, enlargement can signal prostate cancer, necessitating PSA testing and digital rectal exam…