The phrase "to have the disease" means that a person is affected by an illness or sickness. It implies that the person is experiencing symptoms and has been diagnosed with a specific medical condition. Full definition
Because kidney disease tends to have no early symptoms, most people who have the disease don't know it until serious damage has been done, and may go untreated. (sciencedaily.com)
It might be normal at times, but if you have a record of having diseases like what I mentioned earlier, you should do something. (shrewdmommy.com)