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.
Erythema can be the consequence of several so-called “patterns of disharmony” in Chinese Medicine.
Chinese Medicine sees the body as a system, not a sum of isolated parts. A "pattern" is when the system's harmony is disrupted, leading to symptoms or signs that something is wrong (like erythema here). It is similar to the concept of disease in Western Medicine but not quite: a Western disease can often be explained by several Chinese patterns and vice-versa.
A pattern often manifests itself in a combination of symptoms that, at first glance, do not seem necessarily related to each others. For instance here erythema is often associated with boils, carbuncles and swellings in the pattern “Toxic Heat”.
Once identified, patterns are treated using medicinal herbs, acupuncture, and other therapies. In the case of erythema we’ve identified that a herbal formula called Wu Wei Xiao Du Yin can help treat the patterns behind the symptom.
In Chinese Medicine erythema is a symptom for the pattern "Toxic Heat". Below is a small explanation for it with links for more details.
Pulse type(s): Rapid (Shu)
Tongue coating: Yellow coating
Tongue color: Red
Toxic Heat is often treated with Wu Wei Xiao Du Yin, a herbal formula made of 5 herbs (including Honeysuckle Flowers - Jin Yin Hua - as a key herb). Wu Wei Xiao Du Yin belongs to the category of "formulas that clear external abscesses and sores", which might be why it is often recommended for this pattern. Its main action as a formula is: "Clears Heat".
Source date: 1742 AD
Number of ingredients: 5 herbs
Key actions: Clears Heat. Resolves Toxicity. Cools the Blood. Reduces swelling.
Because it is a formula often recommended to treat the pattern 'Toxic Heat' of which erythema is a symptom.
Its main actions are: Clears Heat and dispels toxicity. Dispels Wind-Heat derived from an External pathogen. Expels Damp-Heat from the Lower Burner. Relieves Carbuncles.