What conditions are treated with the point XiYan?

The point XiYan, located in the knee area (specifically between the tendons of the quadriceps and patellar), is traditionally associated with the treatment of knee pain and issues related to the lower extremities, such as weakness. This reflects its role in addressing conditions involving knee joint disorders, such as arthritis and strain, as well as general weakness in the legs, which could be a result of various underlying health issues or injuries.

In contrast, the other options focus on conditions that do not primarily relate to the knee or lower extremities. Stuffy chest and gastric pain are more aligned with points that target the chest area, while conditions like cholecystitis and cholelithiasis involve digestive organs and would be better addressed by points connected to the liver or gallbladder. Scrofula, a term historically used to describe swelling of the lymph nodes, particularly in the neck, would not be treated with XiYan as it does not pertain to musculoskeletal conditions.

Thus, XiYan’s effectiveness in addressing knee pain and lower extremity weakness makes it the most appropriate choice among the options provided.