Chinese Sumac (Rhus chinensis), also known as Galla Chinensis or Chinese Gall, has been used in traditional Chinese medicine (TCM) for a variety of ailments, primarily due to its astringent and antimicrobial properties. Traditional texts occasionally reference its use for conditions associated with pus, inflammation, or infection, which may extend to general infections or pain such as earaches. However, specific documentation of Chinese Sumac being used directly for ear infections or earache is very limited in the classical literature. It is more commonly cited for gastrointestinal issues, ulcers, and topical applications for wounds or sores.

Scientifically, there is no robust clinical evidence supporting the use of Chinese Sumac for ear infections or earache. Most modern research on Rhus chinensis focuses on its antimicrobial, antioxidant, and anti-inflammatory properties in vitro or in animal models, not specifically on otic (ear) conditions. Therefore, the use of Chinese Sumac for ear infections or earache is primarily based on traditional practices, with very weak direct evidence or rationale for this specific indication.