**Core Concept**
Unilateral high-stepping gait, also known as steppage gait, is a type of abnormal gait pattern characterized by the elevation of the limb on the affected side, often due to weakness or paralysis of the lower limb muscles. This gait is typically seen in patients with peripheral neuropathy, particularly diabetic neuropathy, or in those with foot drop due to nerve or muscle damage.

**Why the Correct Answer is Right**
The high-stepping gait is a compensatory mechanism to lift the toes in order to avoid dragging them on the ground, as the patient lacks the ability to dorsiflex the foot due to nerve or muscle weakness. This is often seen in patients with diabetic neuropathy, where the loss of sensory and motor function in the lower limbs leads to weakness of the anterior tibialis muscle, resulting in foot drop. The patient has to lift the limb higher than normal to avoid dragging the toes, hence the term "steppage" gait.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it is not related to the specific gait pattern described.
**Option B:** This option is incorrect as it is a type of gait seen in patients with Parkinson's disease, characterized by a shuffling or festinating gait, not high-stepping.

**Clinical Pearl / High-Yield Fact**
A classic exam trap is to confuse steppage gait with other types of gait disturbances. Remember that steppage gait is characterized by the elevation of the limb on the affected side, often due to weakness or paralysis of the lower limb muscles.

**Correct Answer: C. Steppage gait is seen in patients with peripheral neuropathy, particularly diabetic neuropathy, or in those with foot drop due to nerve or muscle damage.**