Water toxin

A disease spoken of in ancient literature attributed to poisoning of water by malign worms at the source of rivers and said to be marked by aversion to cold, slight headache, pain in the eye sockets, heart vexation, rigidity of the joints of the lumbus and back, knee pain, desire only for sleep, and counterflow cold of the limbs up to the knees and elbows. Water toxin was also said to cause sores in the lower areas that are neither painful nor or itchy, and that suppurate and burst, dampness pouring downward, failure to eat, manic speech, and passage of bloody matter like a mashed liver.