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 urticaria can be treated by one herbs that we have on record. Here is the list below.
Because it is a herb specifically indicated to treat urticaria as can be seen on Black-Tail Snake's page.
Black-Tail Snakes is a Neutral herb that tastes Sweet. It targets the Liver.
Its main actions are: Expels Wind Dampness and disperses Cold. Removes obstruction of Channels and Meridians. Stops spasms and convulsions.