Figure. Eschar of inoculation and lymphadenopathy in patient with febrile syndrome caused by a strain of Rickettsia parkeri, Colombia. A) A 1 .3 × 1.6 cm eschar with an erythematous halo is present at the site of a tick bite above the left iliac crest. B) A closer view reveals a brown-black crust and a collarette of desquamation. C) Distended skin overlying enlarged draining lymph nodes, 3.5 cm in length, is visible in the left inguinal region.