What is the primary condition treated with indirect moxa applied with salt?

Indirect moxa applied with salt is primarily used for conditions related to the middle jiao. The middle jiao, which encompasses the stomach and spleen, is crucial in the process of digestion and the transformation of food into qi and blood. When moxibustion is used in conjunction with salt, it is particularly effective for warming and nourishing these organs, helping to dispel cold and alleviate symptoms associated with middle jiao dysfunction.

Conditions such as abdominal pain, diarrhea, and digestive issues are often linked to middle jiao problems. The warming effect of the moxa, coupled with the properties of salt, aids in enhancing the function of the spleen and stomach, thereby harmonizing digestion and alleviating symptoms.

While skin ulcers, yang deficiency, and scrofula are significant concerns in the practice of acupuncture and traditional Chinese medicine, they are typically treated with different techniques or materials. For instance, scrofula (often related to lymphatic issues) and yang deficiency might require different applications of moxibustion with other herbs or direct moxibustion rather than the specific indirect method using salt. Therefore, the choice of indirect moxa with salt aligns well with addressing ailments specifically tied to the middle jiao.