US NATIONAL LIBRARY OF MEDICINE / SCIENCE PHOTO LIBRARY US NATIONAL LIBRARY OF MEDICINE / SCIENCE PHOTO LIBRARY
Historical medical illustration showing disorders of the penis. Figs 1 to 5 show chancroid ulcers. Chancroid is an infection caused by the Haemophilus ducreyi bacterium. It causes ulcers on the skin and mucous membranes of the genitals and enlargement of the lymph nodes in the groin. Fig 2 and Fig 3 show the condition in babies. Fig 5 shows necrosis (black) of the glans (head) of the penis. Figs 6 and 7 show paraphimosis (swollen foreskin trapped behind the glans). From Atlas of Venereal and Skin Diseases by Prince Albert Morrow, published in 1889.
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