To summarize the experience in treating reverse psoriasis based on location-based syndrome differentiation. It is believed that the main pathological factors in the onset of reverse psoriasis are dampness， heat， stasis， and toxins. In clinical practice， treatment is tailored based on the location-based syndrome differentiation and treatment according to the presence of dampness， heat， stasis， and toxins. For cases that manifest predominantly in the upper body with wind-heat attacking the surface， the treatment focuses on clearing heat， dispersing wind， and relieving itching， and a self-designed

Sanhua Decoction

（三花汤） is used. Alternatively， for cases with blood heat accumulating and stagnation， the treatment emphasizes on clearing heat and toxins， and cooling blood to eliminate skin lesions， and self-designed

Sancao Decoction

（三草汤） is employed. For cases that mainly affect the middle part of the body with damp-heat stagnating in the spleen， the treatment focuses on clearing heat， resolving toxins， and drying dampness while invigorating the spleen， and a self-designed

Sanhuang Decoction

（三黄汤） is applied. For cases with stasis and heat intertwining， the treatment aims to resolve stasis， clear heat， and activate collaterals while detoxifying， and a

self-designed

Santeng Decoction

（三藤汤） is used. For cases that predominantly affect the lower part of the body with damp-heat descending， the treatment focuses on detoxification， eliminating dampness， and clearing and promoting the lower jiao， and a self-made

Sanling Decoction

（三苓汤） is used. For cases with cold and dampness accumulating and toxins， the treatment emphasizes on warming

yang

， supplementing

qi

， and detoxification while eliminating dampness， and a self-made

Sanshen Decoction

（三参汤） is prescribed.