Indicated in violent spasmodic coughs, as whooping cough.
Sensation as though cold air were streaming through the air passages on deep inspiration, with provocation to cough and difficult raising of bronchial mucus. Expectoration of yellow, purulent mucus.
Most violent spasmodic cough, often preceded by sensation of smothering, followed by exhaustion; the attacks are extremely violent, the patient becomes purple in the face, followed by exhaustion or vomiting of quantities of tough mucus. Indicated in whooping cough by the extreme violence of the paroxysms, even with expectoration (T. F. Allen).
Attacks of cough come on rapidly, almost running into each other, affording no opportunity to rest between.
(First Lessons in the Symptomatology of Leading Homoeopathic Remedies by H. R. Arndt, M. D. Philadephia. Boericke and Tafel.)