**Core Concept**
Behcet's disease is a rare, chronic inflammatory disorder characterized by a combination of oral and genital ulcers, skin lesions, and uveitis, with a complex pathophysiology involving immune system dysregulation and angiogenesis.

**Why the Correct Answer is Right**
Behcet's disease is known for its vasculitis, particularly affecting the veins and arteries, leading to inflammation and damage to blood vessels. This can cause a range of symptoms, including oral and genital ulcers, skin lesions, and uveitis. The involvement of blood vessels is a hallmark of the disease.

**Why Each Wrong Option is Incorrect**
**Option A:** Oral ulcers are a classic feature of Behcet's disease, often presenting as recurrent, painful, and shallow ulcers on the mucous membranes of the mouth.
**Option B:** Genital ulcers, typically painless and shallow, are another common feature of the disease, often appearing as aphthous ulcers on the vulva or penis.
**Option C:** Uveitis is a common feature of Behcet's disease, often presenting as a chronic, recurrent, and potentially sight-threatening inflammation of the uvea in the eye.

**Clinical Pearl / High-Yield Fact**
Behcet's disease is often associated with a high risk of venous thrombosis, particularly in the context of oral anticoagulation therapy.

**Correct Answer: D.**