Related topics from Britannicaacne
any inflammatory disease of the sebaceous, or oil, glands of the skin. There are some 50 different types of acne. In common usage, the term acne is frequently used alone to designate acne vulgaris, ...
tetracycline
any of a group of broad-spectrum antibiotic compounds that have a common basic structure and are either isolated directly from several species of Streptomyces bacteria or produced semisynthetically ...
Klinger, Georgette
Czech-born American skin-care innovator (b. 1915, Brno, Czechoslovakia [now in the Czech Republic]-d. Jan. 9, 2004, New York, N.Y.), revolutionized the field of cosmetics and skin care by developing ...
drug
Tetracyclines have a common structure but differ from each other by the presence or absence of chloride, methyl, and hydroxyl groups. Although these modifications do not change their broad-spectrum ...
scar
mark left on the skin after the healing of a cut, burn, or other area of wounded tissue. As part of the healing process, specialized cells called fibroblasts in adjacent areas of skin produce a ...
skin disease
An increase in melanin pigmentation may be caused by an increased density of melanocytes, by abnormal packaging of melanin, or by increased melanin production. Pigmented birthmarks usually reflect ...
radiation therapy
use of radiation sources in the treatment or relief of diseases. Radiation therapy almost always makes use of ionizing radiation, deep tissue-penetrating rays, which can physically and chemically ...
childhood disease and disorder
Adolescence begins with the onset of sexual maturation and continues through the transition state from childhood to young adulthood. The beginning is biologically defined by the onset of puberty, ...
therapeutics
Local anesthetics produce loss of sensation and make it possible for many surgical procedures to be performed without a general anesthetic. Barring any complications, the need for the patient to ...
Stein-Leventhal syndrome
disorder in women that is characterized by an elevated level of male hormones (androgens) and infrequent or absent ovulation (anovulation). About 5 percent of women are affected by Stein-Leventhal ...
|
|
