What is the name of the chronic vascular disorder where telangiectasia is visible?

The correct answer is rosacea, a chronic vascular disorder characterized by the presence of visible blood vessels, known as telangiectasia, on the face. This condition often presents with redness, flushing, and sometimes even acne-like bumps. The development of telangiectasia in rosacea is due to various factors, including inflammation and vasodilation, which lead to the swelling and prominence of small blood vessels.

While psoriasis, eczema, and alopecia are all skin conditions, they do not typically feature telangiectasia as a characteristic symptom. Psoriasis is known for its red, scaly patches but does not involve dilated blood vessels. Eczema presents with itchy, inflamed skin but lacks the chronic vascular component. Alopecia refers to hair loss and does not involve skin vascularity at all. Thus, the presence of telangiectasia specifically points to rosacea as the correct answer.