Dilation of capillary walls is known as what?

• A. Aneurysm
• B. Telangiectasia
• C. Varicosity
• D. Edema

Answer: (B)

Telangiectasia refers to the dilation of small capillaries near the surface of the skin, producing fine red or threadlike lines, sometimes called spider veins. It happens when tiny vessels widen and become visibly prominent. This is different from an aneurysm, which is a ballooning of a larger vessel, usually an artery. Varicosity describes enlarged, twisting veins (often in the legs) due to valve problems in larger veins. Edema is swelling from fluid buildup, not just capillary dilation. In practice, telangiectasia appears as delicate vascular patterns on the skin and is often linked to sun damage or rosacea, so esthetic treatments are chosen to be gentle to avoid aggravating the vessels.