Syndrome differentiation and treatment
The syndrome differentiation of this disease should first aim at distinguishing the severity of edema. Severe edema is due to excessive pathogenic wind, which is fast in onset and easily results in the emergent symptom of suffocation. Secondly, discriminate whether swelling is red or white. Red swelling belongs to heat while white swelling pertains to wind. The site of the pathological changes exists in the throat, the critical passage of respiration, so take care to be on guard against pathogenic wind which is apt to migrate and change. White swelling of the epiglottis easily leads to obstruction of the air passage. Therefore, observe the state of epiglottic swelling at all times. Perform the tracheotomy in time to prevent suffocation when the disease has not abated or even worsened on the contrary after the treatment.

1. Syndrome of external attack by wind and heat
Main symptoms and signs: Pharyngodynia and dysphagia with the sensation of pharyngolaryngeal obstruction, aversion to cold, fever, slight thirst, epiglottic congestion and swelling and poor epiglottic activity in the examination, red lingual margin and tip, whitish and thin fur, floating and rapid pulse.
Therapeutic methods: Dispelling wind and scattering heat, dispersing the lung and relieving sore larynx.

2. Syndrome of wind intermingled with phlegm
Main symptoms and signs: Pharyngodynia and dysphagia, obstruction of the pharynx with discomfort, obstructive respiration, laryngeal rale, aversion to cold, fever, no thirst, severer hemispherical epiglottic edema with poor epiglottic mobility and slight congestion or without congestion discorered by the examination, reddish tongue with greasy fur and slippery pulse.
Therapeutic methods: Dispelling wind and resolving phlegm, diminishing swelling and relieving sore larynx.