What is a recognized feature of Herpes Zoster Ophthalmicus?

Herpes Zoster Ophthalmicus is primarily characterized by a unilateral rash that presents with vesicles in the distribution of the ophthalmic branch of the trigeminal nerve. This rash typically appears on one side of the face and can be accompanied by edema and erythema. The presence of lymphadenopathy is also common as the body responds to the viral infection, indicating an immune response to the varicella-zoster virus, which causes both chickenpox and shingles.

The unilateral nature of the rash distinguishes Herpes Zoster Ophthalmicus from other conditions that may cause bilateral symptoms. The vesicular rash can lead to complications affecting the eye, such as keratitis and uveitis, further emphasizing the importance of recognizing this characteristic presentation. Thus, the combination of a unilateral rash with vesicles and lymphadenopathy clearly aligns with the recognized features of the condition, making this the correct answer.