Cribier et al1 compared the presence of periungual erythema in 155 human immunodeficiency virus (HIV)–positive patients and 103 HIV-negative controls. Fingers were examined on only 1 occasion. Periungual erythema was found in 16 (10.3%) of the HIV-positive group and in 5 (4.9%) of the HIV-negative group (P=.08). The authors conclude: " . . . the frequency of this symptom [periungual erythema] was not significantly higher than in the control subjects . . . red fingers are not specific of either HIV or HCV [hepatitis C virus] infection."
Pechère M, Krischer J, Trellu L, Saurat J. Persistent Periungual Erythema With Telangiectasia: Red Fingers Syndrome. Arch Dermatol. 1999;135(6):715-716. doi:10-1001/pubs.Arch Dermatol.-ISSN-0003-987x-135-6-dlt0699