What kind of disorder produces symptoms caused by detectable physical changes in the body?

The term "organic disorder" refers to medical conditions that are characterized by noticeable physical changes in the body. These changes can be observed through various diagnostic tests, imaging studies, or direct examination of tissue. For example, organic disorders may include conditions like diabetes mellitus, where high blood sugar levels can lead to significant organ damage, or diseases like heart disease, which may show structural abnormalities within the cardiovascular system.

In contrast, a functional disorder involves symptoms without detectable physical changes to the body, often linked to how the body functions rather than structural abnormalities. Psychosomatic disorders involve physical symptoms that stem from emotional or psychological issues, rather than direct physiological changes. Chronic disorders generally describe long-lasting conditions without specifying whether they are characterized by physical changes or not; many chronic disorders can be organic, but the term itself does not inherently imply the presence of physical abnormalities.

Therefore, "organic disorder" is the most accurate choice as it emphasizes the relationship between identifiable physical changes in the body and the symptoms experienced by the individual.