Wood lamp examination. Allow the Wood lamp to warm up (about 1 minute), and give your eyes time to adapt to the dark. Vitiligo: patches, varying in location and extent. A Wood’s lamp examination is a test that uses ultraviolet (UV) light to look at the skin closely. Fungal infections; Porphyria; Skin coloring changes, such as vitiligo. It also can detect skin pigment disorders such as vitiligo and other skin irregularities. Some of the conditions that a Wood’s lamp examination can help diagnose include:.
Wood’s lamp examination. Wood’s lamp (black light) emits UV-A radiation (315-400 nm) with a peak at 365 nm and almost no visible light. The dermatologist should always make a full body examination for vitiligo. A hand device (Wood’s lamp) emitting ultraviolet light is usually used to increase the visibility of white patches: this can be enough for a correct clinical diagnosis. The Woods Lamp test must be conducted in a dark room and the skin area being examined must not be contaminated with any agents (eg. The Woods Lamp examination holds no risk and you won’t feel anything during the procedure.
Washing the area before subjecting it for Wood’s lamp examination should be avoided since it may yield false negative results due to dilution of the pigment. Wood’s Lamp Examination: Condition information and pictures – Procedure Overview. Porphyria cutanea tarda; Vitiligo; Other pigmentary disorders. A blacklight (or often black light), also referred to as a UV-A light, Wood’s lamp, or simply ultraviolet light, is a lamp that emits long-wave (UV-A) ultraviolet light and not much visible light. A vitiligo patient’s skin will appear yellow-green or blue under the Wood’s lamp.
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Vitiligo can be diagnosed by its appearance, and a Wood’s light exam can help the doctor distinguish between differences in areas of the skin. To perform Wood’s light exam, a doctor darkens the room and looks over the skin using a special light or lamp. Amjo has been specializing in Black Lights or Woods Lamps for over a decade. Vitiligo is an acquired condition where there is patchy loss of melanin from the epidermis, causing areas of pale skin. Very obvious on dark skin but on white skin this lesion may need Wood’s light to make it more apparent. The Wood’s lamp allows doctors to see areas affected by vitiligo that may appear normal under regular light. In some cases, an examination of the eyes may be necessary. One of the unique things about Vitiligo is that the areas where the pigment has been lost because of Vitiligo glow or fluoresce under a Woods Lamp sometimes called Black Light.