Palmar telangiectases as a manifestation of Graves disease.

Telangiectases are lesions formed by persistent segmental dilatation of papillary plexus vessels of the skin that typically present as fine, bright, nonpulsatile red lines or netlike patterns. Palmar erythema commonly presents as symmetric, blanchable, slightly warm, nonscaling erythema, most frequently involving the thenar and hypothenar eminences of the palmar surface. Palmar telangiectases and palmar erythema both have primary cutaneous, systemic disease, neoplastic, infectious, and drug-induced etiologies. We describe a case of palmar telangiectases in a patient with Graves disease. We also describe the pathophysiology of palmar telangiectases and palmar erythema and present a literature review of their etiologies.