Multiple Sclerosis (MS) Glossary

| A | B | C | D | E | F | G | Ha - Hi | Hj - Hz | I | J | K | L | M | N | O | Pa - Ph | Pi - Pz | Q | R | Sa - Sk | Sl - Sz | T | U | V | W | X | Y | Z |

Glossary - Pi - Pz

  • pleural effusion - abnormal accumulation of fluid between the layers of the membrane that lines the lungs and chest cavity
  • pneumonia - an infection of the lung characterized by inflammation; usually caused by a pathogen such as a bacteria or virus
  • pneumothorax - abnormal accumulation of air or gas in the pleural space (the space surrounding the lungs)
  • polyuria - excessive urine production; usually pale and dilute; often a symptom of diabetes
  • postural hypotension - sudden decrease in blood pressure upon standing, usually causing temporary dizziness or blackout
  • proctitis - inflammation of the rectum or anus; marked by bloody stools and a frequent urge to defecate; often associated with Crohn's disease or ulcerative colitis
  • psoriasis - chronic skin disease characterized by dry red patches covered with scales
  • psychosis - any severe mental disorder in which contact with reality is lost or is highly distorted
  • ptosis - drooping of a muscle; usually applied to drooping of the upper eyelid caused by muscle paralysis and weakness
  • pulmonary embolus - blockage of an artery in the lungs by fat, air, tumor tissue, or blood clot




Multiple Sclerosis

10% of cases of Multiple Sclerosis are diagnosed after the age of fifty.

Early Symptoms

The nature of multiple sclerosis and the vagueness of a symptom appearing here or there over time, without any apparent connection means there is a lack of data on what can accurately be considered as early symptom of multiple sclerosis... Read More