Running Fire / Erysipelas
Erysipelas caused by Streptococcus pyogenes, a type of acute lymphangitis affecting skin and mucous membranes. This bacterium has strong infectivity and invades the reticular lymphatic vessels through minor skin injuries, spreading rapidly to adjacent subcutaneous tissues. Commonly occurs on lower limbs, especially the tibia, ankle, and dorsum of the foot. Often accompanied by swollen inguinal lymph nodes. Early symptoms include chills, fever, joint pain, headache, and poor appetite. Subsequently, small red patches appear on the skin, quickly expanding into a bright red area slightly raised above the skin surface, with clear borders sharply distinct from normal skin. Severe cases may develop purpura or blisters of varying sizes.
Lower limbs and face are common sites. Patients with athlete’s foot often experience recurrent episodes leading to lymphatic obstruction, skin thickening, and elephantiasis.
Diagnosis:
1. Rapid onset with systemic symptoms such as chills and fever; rash-related symptoms persist after eruption.
2. Commonly affects face and lower legs.
3. Skin lesions: typical presentation includes bright red, tender, hot, and clearly demarcated hard erythematous plaques. Blisters, bullae, pustules, or necrosis may occur at the site. Recurrent episodes may occur at the original lesion site (recurrent erysipelas).
4. Repeated recurrence leads to lymphatic obstruction, resulting in elephantiasis, commonly seen on lower limbs.
5. Local lymph node enlargement.
6. Often associated with primary infection foci—e.g., athlete’s foot on lower limbs, nasal mucosal damage on face.
Treatment: Complete rest, elevate the affected limb, limit activity. Apply wet hot compress with 50% magnesium sulfate locally, or use Qing Fu Ointment externally. Systemically administer sulfonamides or penicillin. Continue medication for 3–5 days after both local and systemic symptoms resolve to prevent relapse. For lower-limb erysipelas with concurrent athlete’s foot, treat the fungal infection first to avoid recurrence. Prevent contact transmission.
Traditional Chinese Medicine recognized this condition early. According to TCM classification based on location: severe cases on head and face are called "Great Head Epidemic," mild ones "Embracing Head Fire Dan"; those on waist and hips are termed "Internal Erysipelas"; those on lower limbs are known as "Running Fire"; and those in children are called "Red Drifting Erysipelas." Pathogenesis involves internal heat in the blood, external invasion by fire-toxin, accumulating in the skin and muscles. Alternatively, due to skin or mucosal breaks, pathogenic toxins invade through the openings. Cases on head and face usually involve wind-heat; those on waist and hips result from liver fire and spleen dampness; lower limb cases stem from damp-heat descending and transforming into fire-toxin; pediatric cases mostly due to internal heat. Treatment varies by site: head/face cases should focus on dispersing wind, clearing heat, and detoxifying; waist/hip cases require clearing liver fire and draining dampness; lower limb cases need clearing heat and detoxifying, promoting blood circulation and removing stasis.
(Commonly affects lower limbs, presenting with redness, swelling, heat, pain, along with chills, high fever, and headache) Fresh winter melon rind, one ounce per dose, burn into a decoction for oral intake and external application. Twice daily for five consecutive days to reduce swelling, relieve pain, clear heat, and detoxify.