Multiple Sclerosis (MS) Glossary

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Glossary - A

  • abnormal gait - gait abnormalities are unusual and uncontrollable problems with walking
  • abscess - localized collection of pus surrounded by inflamed tissue
  • achalasia - obstruction of the esophagus that develops due to failure of the esophagogastric sphincter to relax, causing the upper esophagus to fill with retained food.
  • acute brain syndrome - sudden state of severe confusion and rapid changes in brain function
  • adenoma - a benign tumor of a glandular structure or of glandular origin
  • agitation - an unpleasant state of extreme arousal, increased tension, and irritability; extreme emotional disturbance
  • alcohol intolerance - allergy-like symptoms following ingestion of alcohol such as flushing and reddening of the face
  • anaphylactoid - resembling anaphylaxis or anaphylactic shock
  • angina pectoris - severe spasmodic pain in the chest associated with an insufficient supply of blood to the heart, usually involving the left shoulder area
  • anuria - the failure of the kidneys to excrete urine; absence of urine
  • apathy - inappropriate lack of interest, concern, or emotion; indifference
  • aphasia - loss of the ability to articulate ideas or comprehend spoken or written language, resulting from damage to the brain caused by injury or disease
  • aphthous stomatitis - inflammation of the mucous membrane of the mouth; associated with thrush
  • apnea - temporary absence or cessation of breathing
  • arrhythmia - an alteration in rhythm of the heartbeat
  • arthritis - inflammation of a joint, or joints, of the skeletal system; usually accompanied by pain
  • arthrosis - degenerative disease of a joint of the skeletal system
  • ascites - accumulation of serous fluid in peritoneal (abdominal) cavity
  • asthenia - abnormal loss or lack of bodily strength; weakness; debility
  • asthma - chronic respiratory disease, usually allergic in origin; characterized by sudden recurring attacks of labored breathing, chest constriction, wheezing and coughing
  • ataxia - loss of the ability to coordinate muscle movements
  • atelectasis - collapse of part of the lung caused by blockage to the airway (bronchioles) or by sustained shallow breathing
  • atrial fibrillation - rapid irregular twitchings of the muscular wall of the heart




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