Multiple Sclerosis (MS) Glossary
Glossary - Hj - Hz
- hydrocephalus - accumulation of liquid within the cavity of the skull, especially within the ventricles of the brain
- hypalgesia - diminished sensitivity to pain
- hyperesthesia - an unusual increased or altered sensitivity to sensory stimuli such as touch (tactile hyperesthesia) or sound (auditory hyperesthesia)
- hyperventilation - abnormally fast or deep respiration resulting in a loss of carbon dioxide from the blood and causing faintness, lightheadedness and tingling in the extremities
- hypoglycemic reaction - a reaction to a fall in blood sugar; symptoms may be mild or severe and may range from mild weakness or dizziness to overt neurological signs which resemble those of a stroke
- hypotension - abnormally low blood pressure
- hypothermia - abnormally low body temperature
- hypothyroidism - a condition in which the thyroid gland fails to produce enough thyroid hormone
- hypoventilation - abnormally shallow or slow breathing resulting in increased carbon dioxide build up in the blood; may be the result of impaired lung functioning
- hypoxia - insufficient levels of oxygen in the blood or tissue