RT Book, Section A1 Taylor, Stephanie N. A1 Martin, David H. A2 Klausner, Jeffrey D. A2 Hook, Edward W. SR Print(0) ID 3025144 T1 Chapter 12. Chancroid T2 CURRENT Diagnosis & Treatment of Sexually Transmitted Diseases YR 2007 FD 2007 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-145606-7 LK accessmedicine.mhmedical.com/content.aspx?aid=3025144 RD 2024/04/19 AB • Tender papule develops into a pustule after an incubation period of 4–7 days; the pustule ruptures within a few days to produce a nonindurated, painful ulcer with a purulent base and undermined or ragged borders.• Unilateral tender inguinal adenopathy may progress to a bubo (fluctuant lymph node mass) that spontaneously ruptures or requires drainage.• Isolation of the causative organism, Haemophilus ducreyi, by special culture media.