If you have seen someone's illness in your dream: It may be easier to wait for a mermaid than to invite someone you know who can't swim to the pool. You may have some arguments and resentments. To see someone's illness in your dream indicates that the people around you live a healthy and peaceful life and take them as an example, lead a healthy life and be a very careful person. Being sad about someone's illness in a dream is interpreted as trying to be a partner in the troubles of a loved one and always trying to support him.