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 spasmodic pain 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 spasmodic pain
Why might White Peony Root (Bai Shao) help with spasmodic pain?
Because it is a herb specifically indicated to treat spasmodic pain as can be seen on White Peony Root's page.
White Peony Roots is a Neutral herb that tastes Bitter and Sour. It targets the Spleen and the Liver.
Its main actions are: Tonifies the Blood and preserves the Yin. Nourishes the Liver and assists in the smooth flow of Qi. Regulates the meridians and eases the pain.
Why might Liquorice (Gan Cao) help with spasmodic pain?
Because it is a herb specifically indicated to treat spasmodic pain as can be seen on Liquorice's page.
Liquorice is a Neutral herb that tastes Sweet. It targets the Spleen, the Stomach, the Heart and the Lung.
Its main actions are: Tonifies the Basal Qi and nourishes the Spleen Qi. Clears Heat and dispels toxicity. Moistens the Lungsexpel phlegm and stop coughing. Relieves spasms and alleviates pain. Harmonizes and moderates the effects of other herbs.
Other symptoms often associated with spasmodic pain
Abdominal pain Palpitations Coughing Abcesses Sore throat Anemia Irregular menstruation Night sweats