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Many skin conditions require a skin biopsy for confirmation of the diagnosis. With several of these conditions there are features within the cells contained in the skin biopsy specimen that have elements in their cytoplasm or nucleus that have a characteristic appearance unique to the condition. These elements are termed inclusion bodies.
The word Negrito, the Spanish diminutive of negro, is used to mean "little black person."This usage was coined by 16th-century Spanish missionaries operating in the Philippines, and was borrowed by other European travellers and colonialists across Austronesia to label various peoples perceived as sharing relatively small physical stature and dark skin. [1]
Hyperpigmentation can be diffuse or focal, affecting such areas as the face and the back of the hands. Melanin is produced by melanocytes at the lower layer of the epidermis . Melanin is a class of pigment responsible for producing color in the body in places such as the eyes, skin, and hair.
Aeta (Ayta / ˈ aɪ t ə / EYE-tə), Agta and Dumagat, are collective terms for several indigenous peoples who live in various parts of Luzon islands in the Philippines.They are included in the wider Negrito grouping of the Philippines and the rest of Southeast Asia, with whom they share superficial common physical characteristics such as: dark skin tones; short statures; frizzy to curly hair ...
Acanthosis nigricans is a medical sign characterised by brown-to-black, poorly defined, velvety hyperpigmentation of the skin. [1] It is usually found in body folds, [2] such as the posterior and lateral folds of the neck, the armpits, groin, navel, forehead and other areas.
A woman with dark skin. Dark skin is a type of human skin color that is rich in melanin pigments. [1] [2] [3] People with dark skin are often referred to as black people, [4] although this usage can be ambiguous in some countries where it is also used to specifically refer to different ethnic groups or populations. [5] [6] [7] [8]
Skin whitening, also known as skin lightening and skin bleaching, is the practice of using chemical substances in an attempt to lighten the skin or provide an even skin color by reducing the melanin concentration in the skin. Several chemicals have been shown to be effective in skin whitening, while some have proven to be toxic or have ...
In cosmetics, skin toner or simply toner refers to a water-based lotion, tonic, or wash designed to cleanse the skin and prepare it for other skincare products, such as moisturizers and serums. [1] Typically used on the face, toners remove any remaining impurities after cleansing, balance the skin’s pH, and hydrate the skin. [ 2 ]