High tension in the arteries is often associated with sleeplessness, the pressure of blood being such that the circulation in the brain is constantly maintained at a high rate of speed and the brain is unable to obtain rest.
Jevons suffered a good deal from ill health and sleeplessness, and found the delivery of lectures covering so wide a range of subjects very burdensome.
The treatment of plague is still symptomatic. The points requiring most attention are the cerebral symptoms - headache, sleeplessness, delirium, &c. - and the state of the heart.
At last, one day in June 1821, after three weeks' total sleeplessness, he went through the crisis afterwards described quite " literally " in Sartor Resartus.
Worn out by sleeplessness and anxiety they threw their burden of sorrow on one another and reproached and disputed with each other.