The cough is spasmodic and resembles croup or whooping cough. Allium cepa has a record for croupy cough.
The old lady binds onion on the throat of the child with croup, and no doubt, out in the back woods, where there are no doctors, it was far better than Old School treatment.
Here is a fairly good description from the Guiding Symptoms:
“Hoarse, harsh, ringing, spasmodic cough, excited by constant tickling in the larynx; cough produces a raw, splitting pain in the larynx, so acute and so severe as to compel the patient to crouch from suffering and to make every effort to suppress the cough.”
“Severe, laryngeal cough, which compels the patient to grasp the larynx; feels as if cough would tear it.”
The child will reach up to the larynx and clutch it. This is wholly different from the Aconite condition, when the child, after exposure to a dry, cold wind, wakes before midnight with a hoarse, barking cough, and clutches the larynx.
So Aconite cannot be substituted for Allium cepa.
Traumatic neuritis: Another affection over which Allium cepa has marvelous power is traumatic neuritis, often met with in a stump after amputation. The pains are almost unbearable, rapidly exhausting the strength of the patient.