Q Switched Nd: Yag Lase

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. Various topical applications, chemical peels, microdermabrasion, etc. have been used with variable benefits. However, lesions like nevus, tattoos, freckles, etc. are not amenable to the above line of treatment.