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Wood's lamp test - of the scalp

Overview Risks Results

Wood’s lamp

Alternative Names: Black light test; Ultraviolet light test Normal Values: Normally your skin will not fluoresce, or shine, under the ultraviolet light. What abnormal results mean: Text Continues Below Using the light, your doctor may be able to confirm a diagnosis of fungal infection or bacterial infection. Your doctor may also be able to gain insight into the cause of light- or dark-colored spots on your skin.

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