Syndrome differentiation and treatment
When wind and cold or pathogenic wind and heat attack the lung, the lung qi will be obstructed without dispersion, causing inflexible opening and closing of the glottis to result in the disease. The commonly-seen syndromes include external attack by wind and heat and external attack by wind and cold which should be mainly treated with the therapeutic methods of dispelling wind and clearing away heat as well as dispersing the lung and promoting phonation or dispelling wind and scattering cold as well as dispersing the lung and promoting phonation respectively.

1.  Syndrome of external attack by wind and heat
Main symptoms and signs: Hoarseness, dryness inside the larynx with itch and cough, low and gruff voice with unsmooth phonation, or cauma and pain inside the larynx, accompanying fever, slight aversion to cold, slight sweating, headache, lassitude of limbs, slightly red lingual margin with whitish thin fur, floating and rapid pulse.
Therapeutic methods: Dispelling wind and clearing away heat, dispersing the lung and promoting phonation.

2. Syndrome of external attack by wind and cold
Main symptoms and signs: Hoarseness originating from being affected by wind and cold and being caught in rain, low and deep voice, slight pain of the pharyngolarynx or with mild dry sensation, disinclination to drink, cough with white thin sputum which is easily expectorated, or nasal obstruction, clear thin nasal discharge, or aversion to cold, mild fever, whitish thin fur, floating and tense pulse.
Therapeutic methods: Dispelling wind and scattering cold, dispersing the lung and promoting phonation.