1. Syndrome of wind and heat attacking the exterior
Main symptoms and signs: Red and swollen, scorching and painful external auditory canal, or with fever and aversion to cold, diffuse swelling of the external
auditory canal or a bit of purulent secretion found during the examination, thin and white fur, floating and rapid pulse.

2. Syndrome of fire and heat of the liver and gallbladder
Main symptoms and signs: Diffuse red swelling and severer pain of the external auditory canal, or with pyorrhea, feverish body, dysphoria, thirst with inclination to drink, dry stool, red tongue with yellowish fur, taut and rapid pulse.

3. Syndrome of hyperactive fire due to yin deficiency
Main symptoms and signs: Itching and uncomfortable external auditory canal with a bit of purulent secretion, rough and thickened skin of the external auditory canal, or with the crust and squame, red tongue with thin fur, thready and rapid pulse.