Rhizome of Common Turmeric Classic Formulas … Natural Herb Library

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Invigorates blood and moves qi ... Jiang Huang is used for blood-stasis pain, menstrual obstruction, abdominal pain, and traumatic bruising where movement and warmth are needed together.
Opens the channels and relieves pain ... it is especially associated with shoulder, arm, and upper-body pain as well as wind-damp obstruction with fixed soreness.
Expels wind-damp in painful obstruction patterns ... unlike food turmeric alone, the medicinal Jiang Huang page should stay on channel-opening and pain-relieving logic.

Juan Bi Tang modifications ... common use when wind-damp and blood stasis produce shoulder and limb pain.
Blood-stasis pain combinations with Dang Gui, Chuan Xiong, or Yan Hu Suo ... traditional strategy for traumatic or menstrual pain.
Upper-body obstruction formulas ... Jiang Huang is often chosen when pain favors the shoulders, arms, or chest-rib region.

Traditional herbology describes Jiang Huang as acrid, bitter, and warm, entering the Spleen and Liver to break up blood stasis, move qi, and relieve pain.
Its clinical split from Yu Jin and E Zhu is fundamental ... turmeric-family medicinals are not interchangeable just because the plants are related.