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Stork bites occur in a significant number of newborns, with estimates ranging from 22–40 percent [2] to 40–70 percent; [3] they are reported more frequently for white babies than for infants of other races. [2] They result from a dilation of capillaries in the skin, [3] and may become darker when the child cries or strains. [4]
Stork bite. Colloquially called a "stork bite", "angel's kiss" or "salmon patch", telangiectatic nevus appears as a pink or tanned, flat, irregularly shaped mark on the knee, back of the neck, and/or the forehead, eyelids and, sometimes, the top lip. The skin is not thickened and feels no different from anywhere else on the body; the only ...
Mongolian spot is a congenital developmental condition—that is, one existing from birth—exclusively involving the skin.The blue colour is caused by melanocytes, melanin-containing cells, that are usually located in the surface of the skin (the epidermis), but are in the deeper region (the dermis) in the location of the spot. [6]
Most genetic disorders are rare in themselves. [5] [8] Genetic disorders are present before birth, and some genetic disorders produce birth defects, but birth defects can also be developmental rather than hereditary. The opposite of a hereditary disease is an acquired disease.
The following is a list of genetic disorders and if known, type of mutation and for the chromosome involved. Although the parlance "disease-causing gene" is common, it is the occurrence of an abnormality in the parents that causes the impairment to develop within the child. There are over 6,000 known genetic disorders in humans.
Ectodermal Dysplasia (ED) refers to a group of genetic disorders characterized by the abnormal development or function of two or more structures that originate from the ectoderm, the outer layer of an embryo. These structures include hair, teeth, nails, and sweat glands, all of which may develop abnormally in people with ED.
Genodermatoses are inherited genetic skin conditions often grouped into three categories: chromosomal, single gene, and polygenetic. [67] [68] 18q deletion syndrome; Acrodermatitis enteropathica; Acrogeria (Gottron syndrome) Acrokeratosis verruciformis (acrokeratosis verruciformis of Hopf) Adams–Oliver syndrome; Adducted thumbs syndrome
In genetic counselling, parents are often told that after having a first child with a condition caused by a de novo mutation the risk of a having a second child with the same mutation is 1 – 2%. However, this does not reflect the variation in risk among different families due to genetic mosaicism. A personalised risk assessment can now ...