**Core Concept**
Allodynia refers to the condition where non-painful stimuli, such as light touch or temperature changes, are perceived as painful by an individual. This phenomenon is often associated with neuropathic pain disorders.

**Why the Correct Answer is Right**
Allodynia occurs due to the abnormal functioning of nociceptors, which are specialized sensory receptors responsible for detecting painful stimuli. In individuals with allodynia, these nociceptors become hyperexcitable and respond to non-painful stimuli as if they were painful. This can be attributed to the damage or dysfunction of the peripheral nervous system, leading to the disruption of normal pain signaling pathways.

**Why Each Wrong Option is Incorrect**
**Option A:** Hyperalgesia refers to an increased sensitivity to painful stimuli, whereas allodynia involves the perception of pain from non-painful stimuli. Although both conditions are associated with pain, they have distinct underlying mechanisms.
**Option B:** Nociception is the process of detecting and transmitting painful stimuli, but it does not specifically describe the phenomenon of perceiving non-painful stimuli as painful.
**Option C:** Hyperesthesia is an increased sensitivity to stimuli, but it can be either painful or non-painful and does not specifically refer to the perception of pain from non-painful stimuli.

**Clinical Pearl / High-Yield Fact**
It is essential to differentiate between allodynia and hyperalgesia, as the two conditions require distinct treatment approaches. Allodynia often responds to treatments targeting the peripheral nervous system, such as topical lidocaine or gabapentin, whereas hyperalgesia may require central nervous system-targeting therapies, such as opioids or tramadol.

**Correct Answer: C. Allodynia refers to pain caused by stimuli that do not normally provoke pain.**