Maculae Cerulea

<p>Pale bluish 0.5 to 1 cm macules (maculae ceruleae) may develop in individuals with prolonged infestation, and are the result of injection of louse anticoagulant saliva during feeding. These lesions are usually found on the lower abdomen, proximal thighs, or buttocks. Inguinal lymphadenopathy is present in some patients.</p>