Which point is primarily used for nurturing yin and treating night sweats?

The point that is primarily used for nurturing yin and treating night sweats is BL-17, also known as "Diaphragm" or "Blood Sea." This acupuncture point is located on the back, specifically on the Bladder channel, and is known to have a significant effect on blood and fluid levels in the body.

BL-17 plays a crucial role in nourishing the yin and blood, which are essential for maintaining moisture in the body. Night sweats often indicate an underlying deficiency of yin, particularly kidney or heart yin, leading to an inability to maintain body fluid balance during the night. By selecting BL-17, practitioners aim to enhance blood production and promote the moistening properties necessary to combat night sweats effectively.

Moreover, this point is known for its ability to influence the blood, making it favorable for conditions that involve sweating, since proper blood formation can help stabilize body temperature and reduce excessive sweating, especially at night. Hence, its use in treating night sweats through the nurturing of yin is well recognized in Traditional Chinese Medicine.