Negra
Negra
Negra (pronunciation: neh-grah) is a term used in various medical contexts. It is derived from the Latin word 'niger', meaning 'black'.
Etymology
The term 'Negra' is derived from the Latin word 'niger', which means 'black'. It is often used in medical terminology to describe certain conditions or symptoms that are characterized by a dark or black coloration.
Medical Usage
In the field of Dermatology, 'Negra' is often used to describe certain skin conditions such as Melanoma or Nevus of Ota, which are characterized by dark or black pigmentation.
In Pathology, 'Negra' may refer to the black discoloration observed in certain diseases such as Black Lung Disease or Alkaptonuria, a rare inherited genetic disorder which can cause darkening of the urine.
In Ophthalmology, 'Negra' can refer to certain eye conditions such as Pigment Dispersion Syndrome, where excess pigment is released from the back of the iris, causing it to appear darker.
Related Terms
- Melanoma: A type of skin cancer that develops from the pigment-producing cells known as melanocytes.
- Nevus of Ota: A blue or grayish-brown pigmented patch that appears on the face and is congenital (present at birth).
- Black Lung Disease: A common name for any lung disease that develops from inhaling coal dust.
- Alkaptonuria: A rare inherited genetic disorder in which a person cannot process the amino acids phenylalanine and tyrosine, which can lead to dark urine.
- Pigment Dispersion Syndrome: A condition characterized by the release of pigment from the back of the iris, which can lead to a change in eye color.
External links
- Medical encyclopedia article on Negra
- Wikipedia's article - Negra
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