**Core Concept**
The question is testing the ability to identify signs suggestive of organic disease, which refers to physical or physiological changes in the body that can be detected through medical examination or diagnostic tests. Organic disease is often characterized by alterations in bodily functions, such as changes in vital signs, reflexes, or neurological function.

**Why the Correct Answer is Right**
The correct answer is likely to be a sign that is not specific to organic disease. Organic disease often presents with signs such as altered mental status, focal neurological deficits, or changes in reflexes. For example, a patient with a cerebral infarction may present with hemiparesis, a change in cognitive function, or an abnormal reflex response. These signs are indicative of an underlying organic cause.

**Why Each Wrong Option is Incorrect**
**Option A:** This option could suggest a sign of organic disease, such as a focal neurological deficit or altered mental status.
**Option B:** This option might represent a symptom of organic disease, such as pain or weakness, which can be associated with various underlying conditions.
**Option C:** This option could be a sign of organic disease, such as a change in vital signs or reflexes.

**Clinical Pearl / High-Yield Fact**
A key distinction between organic and functional disease is the presence of focal neurological deficits or changes in reflexes, which are often indicative of an underlying organic cause. This is an important consideration in the differential diagnosis of patients presenting with symptoms.

**Correct Answer:** D