A form of lung disease resulting from occupational exposure to silica dust over a period of years. Silicosis causes slowly progressive fibrosis of the lungs, impairment of lung function and a tendency to tuberculosis of the lungs.
Crystalline silica of respirable size is primarily quartz dust occurring in industrial and occupational settings in the form of fine, breathable particles. Respirable crystalline silica results from mining and grinding coal.
In the year 2000, crystalline silica of respirable size was upgraded by the U.S. government to a “known human carcinogen.” There are increased lung cancer rates in workers exposed to respirable-size (breathable) crystalline silica, primarily quartz and crystabolite, that are generated during sandblasting and similar activities in an occupational setting.
Silicosis can progress even after a person is no longer exposed to the dust, causing severe shortness of breath years later. The more years of exposure to dust, the greater the risk of the disease. Because there is no effective treatment for silicosis, prevention through exposure control is essential. Managing the dust and preventing the inhalation of particles through the use of filtered air supplies can help reduce the risk of silicosis.
Also known as silicatosis, pneumosilicosis, stone-mason’s disease.
- Silk Road disease
Behcet’s disease. Called Silk Road disease because it is most common and more severe in people originating from countries along the Silk Road, the vast network of ancient trade routes connecting China with the Mediterranean Basin.
Is noted in the periodic table as Ag with an atomic number 47. It is a precious metal used in jewelry, dental fillings, silverware and other consumer goods. A metal used in some medications and in many “natural” remedies. Silver has antibiotic properties. However, overuse of silver, or use of products containing silver by people […]
- Silver bullet
The Silver Bullet in Medicine.
- Simian crease
A single transverse crease in the palm, a minor variation associated with Down syndrome (trisomy 21) and a number of chromosomal and other abnormalities. Also called a four-finger crease; single palmar flexion crease; single upper palm crease.
- Single base change
A change in which a single base in the DNA differs from the usual base at that position. These single base changes are also called SNPs or “snips.” Millions of SNP’s have been cataloged in the human genome. Some SNPs such that which causes sickle cell are responsible for disease. Other SNPs are normal variations […]