A<unk>  medical<unk>  or<unk>  disease is a medical term referring to a medical<unk>  with several etiologies (root causes), such as hepatitis or diabetes. Medical<unk> s are normally defined pathologically (i.e. based on the state of the patient), as in "liver inflammation," or clinically (i.e based on the apparent symptoms of the patient), as in "excessive urination," and not etiologically (i.e. based on the underlying causes of the symptoms), and so it is not unusual for<unk> s to have multiple etiologies.<unk> s are sometimes contrasted with homogeneous<unk> s, which have the same root cause for all patients in a given group.<unk> s are often divided into endotypes based on etiology.
Heterogeneous condition
Genetic heterogeneity
Biphasic disease
Risk factor
Contagious disease
Chronic condition
Dysmorphic feature
Human variability