**Core Concept**
Behcet syndrome is a form of vasculitis that affects multiple systems, including the skin, eyes, and mucous membranes. It is characterized by the triad of recurrent oral ulcers, genital ulcers, and uveitis, often accompanied by other systemic symptoms.

**Why the Correct Answer is Right**
Behcet syndrome is a systemic vasculitis that affects the small vessels of the body. The painful ulcers on the mouth and glans penis are a result of inflammation of the blood vessels in these areas, leading to ischemia and subsequent tissue damage. The blurred vision is due to uveitis, an inflammatory condition affecting the uvea, the middle layer of the eye. The recurrent epididymitis is likely due to vasculitis affecting the blood vessels supplying the epididymis. The condition is often associated with HLA-B51, a genetic marker that increases the risk of developing Behcet syndrome.

**Why Each Wrong Option is Incorrect**

**Option A:** Oculocutaneous aphthous ulcer syndrome is not a recognized medical condition. While it may sound similar to Behcet syndrome, it is not a valid diagnosis.
**Option B:** This option is a distractor and does not correspond to a known medical condition.

**Clinical Pearl / High-Yield Fact**
Behcet syndrome is a classic example of a systemic vasculitis that can affect multiple systems, making it a high-yield diagnosis for medical students to recognize.

**Correct Answer:**
✓ Correct Answer: A. Behcet syndrome