Psoriasis is a common chronic inflammatory skin disease with high prevalence, chronicity, disfiguration, disability. Real-time detection of psoriatic pathological characteristics by optical technology is of great significance for the diagnosis and treatment of psoriasis. We used multiphoton microscopy (MPM) imaging technology based on intrinsic nonlinear optical signals to image the skin of a mouse psoriasis model induced by imiquimod (IMQ). The changes of cells and collagen in psoriasis skin tissue were obtained and analyzed, comparing with the hematoxylin and eosin (H and E) stained image. We found that the MPM technique could clearly observe the differences between normal and psoriasis skin. This is of great significance to the pathogenesis of psoriasis and also provides adjuvant imaging method for the treatment of psoriasis.
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