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

Average age of clinical onset of Multiple Sclerosis is 30 33 years of age.

Cause of Multiple Sclerosis

The cause of multiple sclerosis remains a mystery. Many different causes have been proposed and investigated but as yet the cause of multiple sclerosis remains elusive... Read More