7 large blister beetles (10 small ones, remove heads and legs) 5 croton seeds (remove oil) 9 grams of Sichuan hibiscus bark (grind into powder)

bubble_chart Preparation and Dosage

Grind the above three ingredients together into a fine powder. Mix with vinegar and apply. It may cause slight pain and blistering, but once the blisters fall off, the condition will be cured.

bubble_chart Indications

All cervical neurodermatitis.