The information provided here is not a replacement for a doctor. You shouldn't use it for the purpose of self-diagnosing or self-medicating but rather so you can have a more informed discussion with a professional TCM practitioner.
In Chinese Medicine psoriasis can be treated by two herbs that we have on record. Here is the list below.
The two Chinese Medicinal herbs most likely to help treat psoriasis
Why might Psoralea Fruit (Bu Gu Zhi) help with psoriasis?
Because it is a herb specifically indicated to treat psoriasis as can be seen on Psoralea Fruit's page.
Psoralea Fruits is a Warm herb that tastes Bitter and Pungent. It targets the Spleen and the Kidney.
Its main actions are: Tonifies the Kidney and Spleen Yang and rises Kidney Qi. Prevent Essence leakage and holds urines.
Why might Thunder God Vine (Lei Gong Teng) help with psoriasis?
Because it is a herb specifically indicated to treat psoriasis as can be seen on Thunder God Vine's page.
Thunder God Vines is a Cold herb that tastes Bitter and Pungent. It targets the Spleen and the Liver.
Its main actions are: Dispels Wind and Dampness. Strongly clears Heat and resolves toxicity. Reduces swellings and stops pain. Kills parasites and bugs. Stops itching.
Other symptoms often associated with psoriasis
Generalized body pain Irritability Severe fever and chills without sweating Feeling of heaviness Superficial edema in the extremities Alternating fever and chills Absence of sweating Vitiligo Impotence Seminal emission