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Clinical applications of Q-switched NdYAG laser
Indian Journal of Dermatology, Venereology and Leprology , 01/21/09

Goel A - Skin hyperpigmentation is usually caused by excess production and/or clumping of the skin pigment 'melanin' with the appearance of darker brown or even black spots on skin. Pigmented lesions can be classified either based on location of pigment as epidermal and dermal, or based on causation as nevoid, hereditary, or acquired - drug induced, postinflammatory, hormonal, etc. - and the treatment depends on the underlying cause. This resulted in a search for an ideal laser/light system to effectively target the skin melanin without damaging the surrounding skin. Twenty years of improvements in laser dermatology has resulted in current technology which allows selective targeting of melanin, variable spot sizes, different wavelengths, and a variety of effective cooling devices.

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