A person, undergoing cancer treatment, can have side-effects of the therapy. Also acute diseases (respiratory infection, intestinal infection, allergy etc.) can happen. That's why these patients have to have a Home first-aid kit for a case of urgent situation when they can not come to a hospital as soon as possible. You have to contact with your Medical oncologist / Oncology nurse / Emergency department of your hospital when you have an urgent problem to have an advice - c