Can patients with deficiency fire apply Cornus officinalis?

Patients with deficiency fire (xuhuo) can apply Cornus officinalis (Shanzhuyu) topically under medical guidance to nourish yin and reduce fire if they do not have skin allergies. However, it is not recommended for those with excessive fire (shi huo) or sensitive skin. If any abnormalities occur, prompt medical attention is advised. Detailed analysis is as follows:

When deficiency fire manifests as yin deficiency with fire hyperactivity, such as dry mouth and throat, night sweats, or mild skin warmth, Cornus officinalis can help nourish the liver and kidneys and reduce deficiency fire. Topical application might relieve symptoms through local absorption. It is important to ensure there are no skin injuries or allergic reactions, and to control the frequency and duration of application to avoid excessive irritation.

If the patient's symptoms are actually due to excessive fire, such as high fever, sore throat, or obvious inflammatory reactions, the nourishing properties of Cornus officinalis may be unsuitable and could worsen symptoms. Additionally, some individuals may be sensitive to components of Cornus officinalis, and topical application could cause allergic reactions such as redness, swelling, or itching of the skin. Use should be discontinued immediately. Allergic reactions require immediate discontinuation of use.

Before using Cornus officinalis topically, patients with deficiency fire should clarify the underlying cause and proceed only under the guidance of a physician to ensure suitability for their constitution and prevent adverse reactions.