It is produced in most parts of the country, of which Shandong has the largest output.
Cicada is light, hollow, fragile, yellowish brown, translucent and shiny. It is best to be yellow, light-colored, complete and sediment-free.
Periostracum cicadae is sweet, cold and heat-clearing, light and divergent, and enters the lung meridian, which has the effects of dispersing wind and heat and relieving sore throat. It can be used for treating exterior syndrome of wind-heat syndrome, sore throat and hoarseness.
Has the effects of expelling pathogenic wind, penetrating rash and relieving itching, and can be used for treating measles and rubella pruritus.
It also enters the liver meridian, and the liver begins to understand the eyes. It can be used for treating eye swelling and pain caused by wind-heat attack or liver fire, and covering the veil of eyes.
Because cicada is cold, it belongs to the liver meridian, and it has the effects of cooling liver, relieving convulsion, calming wind and stopping spasm. It can be used for the treatment of acute and chronic convulsion or tetanus in children, characterized by high fever, clenching teeth, limb convulsion, and cubitus varus.
In addition, cicada slough is often used to treat epilepsy and night crying in children.
Because cicada slough is cold, pregnant women eating cold food can easily cause abdominal pain and diarrhea, endanger the fetus and easily cause abortion, so pregnant women should use cicada slough with caution.