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Figure 22–11. Circinate balanitis due to reactive arthritis. (From Susan Lindsley, Dr. M. F. Rein, Public Health Image Library, CDC.) A photo of circinate balantis on a penis. A red ring of a rash is visible around the shaft of the penis, just below the head.

Current Medical Diagnosis & Treatment 2025 > Reactive Arthritis

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eFigure 28–23. Boy, 15-years-old with Kallmann syndrome. His testes were originally undescended, but they descended into the scrotum after human chorionic gonadotropin treatment was given. His height was 163.9 cm (–1.5 SD), and the US:LS ratio was 0.86 (eunuchoid). The penis was 6.3 × 1.8 cm. Each testis was 1 × 2 cm. Plasma LH was not detectable and rose to 5.5 mIU/mL (0.7 ng/mL) after administration of 100 mg of gonadotropin-releasing hormone; FSH rose from 3.6 to 7.2 mIU/mL (1.2–2.4 ng/mL). Testosterone did not change from 17 ng/dL. He had no ability to smell standard odors. (Reproduced, with permission, from Styne DM, Grumbach MM. Reproductive Endocrinology. Yen SSC, Jaffe RB [editors]. Saunders, 1978.) A photo shows a teenage boy, approximately 165 centimeters tall with small penis and absence of pubic hair. A photo shows side view of a teenage boy, approximately 165 centimeters tall.

Current Medical Diagnosis & Treatment 2025 > Male Hypogonadism

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eFigure 28–23. Boy, 15-years-old with Kallmann syndrome. His testes were originally undescended, but they descended into the scrotum after human chorionic gonadotropin treatment was given. His height was 163.9 cm (–1.5 SD), and the US:LS ratio was 0.86 (eunuchoid). The penis was 6.3 × 1.8 cm. Each testis was 1 × 2 cm. Plasma LH was not detectable and rose to 5.5 mIU/mL (0.7 ng/mL) after administration of 100 mg of gonadotropin-releasing hormone; FSH rose from 3.6 to 7.2 mIU/mL (1.2–2.4 ng/mL). Testosterone did not change from 17 ng/dL. He had no ability to smell standard odors. (Reproduced, with permission, from Styne DM, Grumbach MM. Reproductive Endocrinology. Yen SSC, Jaffe RB [editors]. Saunders, 1978.) A photo shows a teenage boy, approximately 165 centimeters tall with small penis and absence of pubic hair. A photo shows side view of a teenage boy, approximately 165 centimeters tall.

Current Medical Diagnosis & Treatment 2025 > Male Hypogonadism

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Figure 33–5. Herpes simplex viral skin infection, frequently found in men (he/him) with HIV. Shown are grouped vesicles typical of herpes simplex on the penis, with both intact vesicles of initial eruption and visible crusts of resolving lesions. (Reproduced, with permission, from Eric Kraus, MD, in: Usatine RP, Smith MA, Mayeaux EJ Jr, Chumley H. The Color Atlas and Synopsis of Family Medicine, 3rd ed. McGraw-Hill, 2019.) A cluster of multiple small reddish vesicular lesions is seen on a penis which is purple at the tip.

Current Medical Diagnosis & Treatment 2025 > HIV Infection & AIDS: Complications

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eFigure 35–14. Chancroid. The genital ulcer of chancroid, caused by Hemophilus ducreyi, is deep and painful. It is often accompanied by tender inguinal lymphadenopathy. (Public Health Image Library, CDC) A patient with chancroid exhibits multiple, medium to large, deep moist ulcerous lesions with red margins and pale center, on the penile shaft.

Current Medical Diagnosis & Treatment 2025 > Chancroid

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Figure 36–1. Primary syphilis with a large chancre on the glans of the penis. The multiple small surrounding ulcers are part of the syphilis and not a second disease. (Used, with permission, from Richard P. Usatine, MD in Usatine RP, Smith MA, Mayeaux EJ Jr, Chumley H. The Color Atlas of Family Medicine, 2nd ed. McGraw-Hill, 2013.) A photo shows that the tip of the penis is inflamed, with ulcers on the inflamed region.

Current Medical Diagnosis & Treatment 2025 > Clinical Stages of Syphilis

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