Telangiectasias may be more common in fair-skinned individuals, those using long-term corticosteroid creams, and those with age-related skin thinning or obesity. Darker-skinned individuals are at slightly lower risk. The most significant signs of telangiectasias include:

Short, slightly raised lines or star-shaped or punctate skin lesions that are dark red or purplish in color.

In children and young adults, vascular dilatations resembling a spider's legs, located on the face, arms, or torso; these lesions, called spider angiomas, present with a central dark red, slightly raised papule a few millimeters in diameter, with thin, slightly raised, red linear telangiectasias radiating outwards.