Consists of the emission of visible light of different colors by these substances. Normally, healthy skin will have very little fluorescence because the melanin will absorb most of the wave and as a consequence hardly any visible light will be emitted. However, when using a wood's lamp in certain skin alterations, fluorescence is produced. Although the use of this light is not enough to confirm the diagnosis, it contributes greatly to establishing it and defining the extent of the lesions.
Inesem business school master in cosmetics and dermopharmacy more information wood's light is primarily used for the detection of infectious, metabolic skin abnormalities ( porphyrias ), and pigmentation disorders. In relation to infectious diseases , erythrasma is whatsapp number list characterized by the emission of a bright red-orange fluorescence while scalp ringworm and pseudomonas infection emit a green fluorescence. Regarding pigmentation disorders, it allows to distinguish between hypopigmentation and depigmentation that occurs in alterations such as vitiligo .
In this case, the fluorescence is white. Skin biopsy a skin biopsy involves removing a small sample of skin for later analysis under a microscope. They are used for the detection of infectious skin abnormalities, disorders such as psoriasis and skin cancer. There are different types of skin biopsies: in punch: it consists of the extraction of a small skin sample of round shape. For its extraction, a hollow circular scalpel is used that is turned clockwise and counterclockwise to cut about 4mm thick and reach the layer of fatty tissue located below the dermis. Shaved: in this type of biopsy, a thin layer of affected skin is removed using a blade or other sharp