Dry mouth. Xerostomia can be associated with systemic diseases, such as Sjogren’s syndrome, systemic lupus erythematosus, and rheumatoid arthritis; and it can be a side effect of medication and poor dental hygiene. Xerostomia results from inadequate function of the salivary glands, such as the parotid glands. Treatment involves adequate intake of water, use of artificial saliva, and good dental care. Untreated, severe dry mouth can lead to increased levels of tooth decay and thrush.
- Xiphoid process
The lower part of the breastbone. The xiphoid process has no particular function and ranges in size from miniscule to several inches in length.
Medical abbreviation for radiotherapy.
One of the three major preparations of red yeast rice, a tradition Chinese medicine now used to lower cholesterol.
The sex chromosome complement of a normal human female. See also X chromosome.
- XXX syndrome
A chromosome condition present in 1 in 1000 females, due to the presence of three X chromosomes rather than the usual two. The condition is associated with increased height but no malformations. Intelligence ranges from above normal to mild retardation. The average IQ is 85 to 90. Learning problems may be helped by early special […]