Erhuang Dan，From *Selected Essentials on Rash Diseases*.，For rashes that are suppressed and fail to erupt, or where the rash has already appeared but is blocked by wind-cold, or where exposure to cold has prevented the rash from breaking through, accompanied by shortness of breath, agitation, and confusion.
Erhuang Dan
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Formulas Name : Erhuang Dan
Chinese Name : 二黄丹
Drug Formulation
1 liang of realgar, 1 liang of ephedra.
Source
From *Selected Essentials on Rash Diseases*.
Processing
Grind the ingredients into a fine powder and form into pills with hot water.
Benefits
For rashes that are suppressed and fail to erupt, or where the rash has already appeared but is blocked by wind-cold, or where exposure to cold has prevented the rash from breaking through, accompanied by shortness of breath, agitation, and confusion.
Instructions for Use
Patients aged 10 and older should take 1 qian; those under 10 should take 5 fen.
Copyright: Excerpt from From *Selected Essentials on Rash Diseases*., Copyright belongs to the Original Author and all original sources, This article was shared by DeDe on August 24, 2026, Please credit the source and include a link to the original article when reposting.
Terminology Proofreading: [Cheng Bo] | August 24, 2026 Reviewed by: [Wang Zhongxiang, Associate Chief TCM Physician (China)] | August 24, 2026
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Erhuang Dan,For rashes that are suppressed and fail to erupt, or where the rash has already appeared but is blocked by wind-cold, or where exposure to cold has prevented the rash from breaking through, accompanied by shortness of breath, agitation, and confusion.