What describes a disease that occurs due to family history?

The term that describes a disease occurring due to family history is "familial." Familial diseases are conditions that manifest within families, suggesting a potential genetic or hereditary component. This means that the likelihood of the disease being present in family members increases based on shared genetics or environmental factors common within the family unit. Familial conditions can include a wide range of disorders, from genetic diseases such as certain types of cancer to heart diseases that seem to have a higher incidence among relatives.

While "hereditary" also pertains to genetic transmission from parents to offspring, it typically refers to traits or disorders that can be directly traced to genes. "Familial" is broader in the sense that it encompasses diseases that may not only have a genetic basis but could also be influenced by shared environmental factors or lifestyle choices.

The other terms, such as "iatrogenic," refer to diseases caused by medical treatment or intervention, and "epidemic" refers to a sudden increase in the number of cases of a disease above what is normally expected in a population. Thus, these terms do not relate directly to diseases caused by familial history, making "familial" the most appropriate choice.