In general terms the morbid effects of plethora are the reverse of those due to anaemia. The causes are overfeeding and insufficient exercise.

Symptoms

A plethoric animal has a full, bloated, congested appearance; the mucous membranes are reddened; the heart's action is more powerful, the pulse being full and strong; a feverish tendency exists, and a dull, heavy, sluggish manner is characteristic. In this condition the brain is more easily excited and congested, involving a liability to convulsions.

Treatment

Plain unstimulating food, reasonable in quantity, enforced exercise, and the occasional use of laxatives.