Any illness changes family life for a while.
A parent or a brother or sister who is home sick with the flu can't spend as much time with the family as usual. The sick person may get special attention, and you may need to help around the house. But most times, the person is not sick for very long, and family life soon goes back to normal. But when someone has cancer, it is different. He or she needs special medical treatment and may go to the hospital or clinic a lot.