Membrane invades the larynx from below and progresses upward. Membrane always continuous and glairy.
FALSE OR SPASMODIC CROUP.
Begins from ten to twelve o’clock at night.
Severe at first.
Cough loud and ringing.
Voice hoarse.
No membrane.
DIPHTHERIA.
Fetid breath.
Membrane dips down in the mucus membrane.