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 numbness of skin can be treated by one herbs that we have on record. Here is the list below.
Black-tail snake might help with numbness of skin
Why might Black-Tail Snake (Wu Shao She) help with numbness of skin?
Because it is a herb specifically indicated to treat numbness of skin 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.
Other symptoms often associated with numbness of skin
Spasms Convulsions Rheumatism Limbs paralysis Tetanus Leprosy Rubella Scabies Urticaria