Solar lentigo is an acquired lentigo resulting from sun exposure. These lesions increase in number with advancing age and are usually related to the extent of past sun exposure. A Q-switched ruby laser provides excellent results with transient post-inflammatory hyperpigmentation. Hydroquinone and broad-spectrum sunscreen are essential for this post-inflammatory melanosis. On the other hand, intense pulsed light with absorption spectrum for melanin induced injury of melanin-containing epidermal cells via photother-mal effects, suggesting that intense pulsed light may be a new modality for solar lentigines without downtime. Careful clinical assessment and informed consent before treatment are important, and patients should be advised to avoid sun exposure.
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