Calcined Shi Gao in powdered form (Duan) is used externally for which conditions?

• A. Eczema, burns, and ulcerated sores
• B. Burns only
• C. Eczema only
• D. Ulcerated sores only

Answer: (A)

Calcined Shi Gao (Duan Shi Gao) used externally as a fine powder is chosen for skin conditions where heat and moisture irritate tissues. The calcination modifies its properties so that, when applied topically, it provides cooling and drying effects while forming a gentle, protective layer on the skin. This makes it helpful for eczema by absorbing moisture and reducing inflammation and itching; for burns by cooling the injury and helping to dry exudate while promoting healing; and for ulcerated sores by drying out the ulcer, absorbing discharge, and supporting repair. Since these three conditions share damp-heat or moist, inflamed skin issues, a single external application can address all of them.