Is it better to take it internally or use it externally to treat facial paralysis?

Petitgrain is usually taken internally and cannot be used externally. It can be used for the treatment of facial paralysis identified as wind-phlegm obstruction. The specific use of medication is in accordance with the doctor’s prescription.
It is composed of white adenosine, white silkworm, and whole scorpion. In the formula, Radix Bupleurum has the efficacy of dispelling wind, resolving phlegm and relieving spasm as the monarch; Scorpion and Stiffworm have the efficacy of dispelling wind and relieving spasm (treating spasm and other symptoms by dispersing the wind); Scorpion is good at clearing up the collaterals and Stiffworm is good at resolving phlegm as the minister; the combination of all the medicines together plays the efficacy of dispelling wind and resolving phlegm (dispelling wind and resolving phlegm), clearing up the collaterals and relieving spasm.
The adverse effects of this product are not clear at present. Note that this formula should not be used if there is deficiency of qi and blood stasis, or if there is internal movement of liver wind, such as crooked eyes and mouth, hemiplegia (inability to move one side of the limb at will). White aconite and whole scorpion in this formula are toxic and should be used with caution.
This formula can be used to treat wind-induced head and face meridian syndrome, which is characterized by lopsidedness of the mouth and eyes, or twitching of the facial muscles, with a pale red tongue and white moss. Modern clinical commonly used in facial nerve paralysis, trigeminal neuralgia, migraine belongs to the wind and phlegm blockage evidence.
The use of the retractor should be under the guidance of a physician, do not use blindly, so as not to cause adverse reactions.