Poikiloderma
Extra pigmentation of the skin that demonstrates a variety of shades and is associated with widened capillaries (telangiectasia) in the affected area.
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- Poikiloderma atrophicans with cataract
Better known as the Rothmund-Thomson syndrome, this is an hereditary disease characterized by progressive degeneration (atrophy), scarring and abnormal pigmentation of the skin together with stunting of growth, baldness, cataracts, depressed nasal bridge, and malformations of the teeth, nails and bone. Poikiloderma atrophicans with cataract (the Rothmund-Thomson syndrome) is inherited as an autosomal recessive trait. […]
- Poikiloderma congenita
Better known as the Rothmund-Thomson syndrome, this is an hereditary disease characterized by progressive degeneration (atrophy), scarring and abnormal pigmentation of the skin together with stunting of growth, baldness, cataracts, depressed nasal bridge, and malformations of the teeth, nails and bone. The outlook (prognosis) for survival is generally fairly good. Rothmund-Thomson syndrome (RTS) is inherited […]
- Point mutation
A single nucleotide base change in DNA. For example, a point mutation is the cause of sickle cell disease.
- Point, McBurney's
McBurney’s point is the most tender area of the abdomen of patients in the early stage of appendicitis. McBurney’s point is named after the 19th-century New York surgeon Charles McBurney (1845-1913) who was the leading authority in his day on the diagnosis and treatment of appendicitis. Dr. McBurney in 1889 showed that incipient appendicitis could […]
- Poison
Any substance that can cause severe organ damage or death if ingested, breathed in, or absorbed through the skin. Many substances that normally cause no problems, including water and most vitamins, can be poisonous if taken in excessive quantity. Poison treatment depends on the ‘substance.