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(1) Tattoo pigment absorption spectra can explain why some colors are more resistant to removal. (2) Pigment darkening is a complex process.

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Raised linear bands of infancy is a newly recognized but rarely reported entity whose etiology remains unknown. Some cases have been associated with dermatographism and it has been postulated that the bands may be related to an increase in collagen deposition and fibrosis from increased mast cell mediators. This is the first reported case of raised linear bands responding to treatment with a topical antihistamine.

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