Breathing can be uneven, just like the pulse can be uneven. Its unevenness can be ordered or disordered.
This is one of the varieties of uneven breathing, namely, breathing in which the expansion of the lungs, that is, catching the breath, or compression, that is, as if stumbling, is accomplished with the help of two movements with a stop between them, like the breathing of a child when he cries: it intercepts when the lungs expand and “stumbles” when they compress. The reason for this is either the great warmth of the heart, which is not satisfied with the inhaled air and forces it to again capture even more, or the weakness of the known instruments of breathing, requiring rest when breathing, or a disorder of nature, causing weakening and loss of strength or giving rise to dryness and hardening of the respiratory organ. This happens most often. Double breathing also occurs due to pain in the respiratory organs or in organs adjacent to them, or due to a tumor. Neighboring organs are the abdominal barrier, liver and spleen; the liver participates with the lungs to a greater extent than the spleen.
This also happens as a result of a disease of the instrument from among those that have already been repeatedly listed, most often from a spasm that already exists or will be. Such breathing is a bad sign in acute illnesses and acute fevers. If it occurs from cold, then fever cures it.