Lacquertree, commonly referring to Toxicodendron vernicifluum (syn. Rhus verniciflua), has a long history of use in traditional East Asian medicine, particularly in China, Korea, and Japan. In these traditions, various parts of the tree, especially the sap and bark, have been used to aid in the healing of injuries such as bruises, sprains, and wounds. The rationale for its use often stems from the belief that the plant possesses anti-inflammatory and wound-healing properties. Traditional medical texts, such as the Chinese "Ben Cao Gang Mu," mention the use of Lacquertree preparations in poultices and topical applications for trauma and swelling. Despite its entrenched place in traditional medicine, scientific validation of Lacquertree's efficacy for treating injuries is limited. Some studies have identified bioactive compounds in Lacquertree, such as flavonoids and urushiol derivatives, which exhibit anti-inflammatory and antioxidant properties in vitro. However, these findings are preliminary, and there is a lack of robust clinical trials or systematic research specifically evaluating its effects on human injuries. Additionally, the plant's sap is well-known to cause severe allergic reactions (contact dermatitis), which raises safety concerns for topical or internal use. In summary, while Lacquertree's use for injuries is supported by traditional practice and some preliminary pharmacological research, strong scientific evidence is lacking, and its use is not widely accepted in modern evidence-based medicine.