What condition is characterized by the abnormal dilation of veins, often in the legs?

The condition characterized by the abnormal dilation of veins, often in the legs, is known as varicose veins. This occurs when the valves within the veins that help regulate blood flow become weakened or damaged. As a result, blood can pool in the veins instead of flowing efficiently back to the heart, leading to the veins becoming enlarged and twisted.

Varicose veins are not only a cosmetic concern but can also lead to discomfort, pain, and more serious complications such as blood clots or venous ulcers. Understanding this condition is crucial for physical therapy technicians, as it may affect mobility and the choice of therapeutic exercises for patients.

Other conditions listed, such as phlebitis, are related to inflammation of the veins but do not specifically describe the dilation aspect. Hypertension refers to high blood pressure and does not inherently involve the structural changes to veins like varicose veins do. A heart murmur indicates abnormal heart sounds often due to turbulent blood flow but does not involve vein dilation. Thus, the distinct characteristic of vein dilation specifically points to varicose veins as the correct answer.