irritativa

If the increased action of the cutaneous and pulmonary capillaries, and of the heart and arteries, in febris irritativa continues long and with violence, a proportional expenditure or exhaustion of sensorial power occurs; which by its tendency to induce torpor of some part, or of the whole, brings on a return of the cold fit.

Zoonomia, Vol. II Or, the Laws of Organic Life Erasmus Darwin 1766

Hence simple fevers are of two kinds; first, the febris irritativa, or fever with strong pulse; which consists of a previous torpor of the heart, arteries, and capillaries, and a succeeding orgasm of those vessels.

Zoonomia, Vol. II Or, the Laws of Organic Life Erasmus Darwin 1766

In this case the patient dies for want of nourishment; either in three or four weeks, of the inirritative fever; or without quick pulse, by what we have called paresis irritativa.

Zoonomia, Vol. II Or, the Laws of Organic Life Erasmus Darwin 1766

This indeed so happens, where the pulse is previously strong, as in febris irritativa; or where another sensorial power, as that of sensation, is exerted on the arterial system, as in inflammations.

Zoonomia, Vol. II Or, the Laws of Organic Life Erasmus Darwin 1766

When this inaction continues without a consequent renewal or increase of activity, the disease becomes chronical, and forms the lumbago frigida, or irritativa, described in Class

Zoonomia, Vol. II Or, the Laws of Organic Life Erasmus Darwin 1766

And thus a fit of simple fever is produced, which is termed Febris irritativa; and consists of a torpor of the cutaneous capillaries with their mucous and perspirative glands, accompanied with a torpor of the heart and arteries; and afterwards of an increased action of all these vessels, by what is termed direct sympathy.

Zoonomia, Vol. II Or, the Laws of Organic Life Erasmus Darwin 1766

Why the pulse should become quicker both from an increase of irritation, as in the synocha irritativa, or irritative fever with strong pulse; and from the decrease of it, as in the typhus irritativus, or irritative fever with weak pulse; seems paradoxical.

Zoonomia, Vol. I Or, the Laws of Organic Life Erasmus Darwin 1766

Where the pulse is small this defect of distention is present, and contributes much to produce the febris irritativa pulsu debili, or irritative fever with weak pulse, called by modern writers nervous fever, as a predisponent cause.

Zoonomia, Vol. I Or, the Laws of Organic Life Erasmus Darwin 1766

This fever, with strong pulse without inflammation, or febris irritativa, described in Class I. 1. 1. 1. is frequently seen in vernal intermittents, as the orgasm of the heart and arteries is then occasioned by their previous state of torpor; but more rarely I believe exists in the type of continued fever, except there be an evident remission, or approximation to

Zoonomia, Vol. II Or, the Laws of Organic Life Erasmus Darwin 1766

Or if this accumulation of sensorial power becomes excessive and permanent, the continued fever with strong pulse is produced, or febris irritativa.

Zoonomia, Vol. II Or, the Laws of Organic Life Erasmus Darwin 1766