An acute, often fatal disease caused by the ingestion of milk, milk products, or the flesh of cattle or sheep which have a disease known as trembles. It is marked by weakness, anorexia, vomiting, constipation, and sometimes muscular tremors. It is caused by poisoning by white snakeroot (eupatorium rugosum) and the rayless goldenrod (haplopappus heterophyllus). (From Dorland, 27th ed)