Cats very often show symptoms of sickness in their behavior, and any sudden behavior change could mean that your cat is ill. (plainfieldanimalhospital.com)
Exposure can result in a many symptoms of sickness exhibited by the people who frequently use them. (spaths.com)
That we can no longer carry on a genuine conversation from one camp to the other is the severest symptom of the sickness of present - day man. (religion-online.org)