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 spasms can be treated by one herbs that we have on record. Here is the list below.
Softshell turtle shell might help with spasms
Why might Softshell Turtle Shell (Bie Jia) help with spasms?
Because it is a herb specifically indicated to treat spasms as can be seen on Softshell Turtle Shell's page.
Softshell Turtle Shells is a Neutral herb that tastes Salty. It targets the Kidney and the Liver.
Its main actions are: Nourishes Yin and subdues exuberant Yang. Resolves hardness.
Other symptoms often associated with spasms
Night sweats Tidal fever Abdominal masses Amenorrhea Convulsions