Diagnosis: Secondary syphilis
A 32-year-old male presents with a 2-week history of asymptomatic, copper-colored papules on his palms and soles. Examination reveals characteristic lesions consistent with a systemic infection, prompting further evaluation for a sexually transmitted infection.
A 32-year-old male presents with a 2-week history of asymptomatic, copper-colored papules on the palms and soles. He reports no prior skin issues but has had multiple sexual partners. Examination reveals multiple, well-defined, erythematous papules with a shiny surface on both palms and soles.Location: Lesions primarily on palms and soles.Color: Copper-colored, non-pruritic papules.Distribution: Symmetrical and diffuse.Associated findings: No mucosal lesions or systemic symptoms noted.Other skin findings: No scarring or ulceration observed.
The patient reports the onset of skin lesions approximately 2 weeks ago, following an unprotected sexual encounter. He has no significant past medical history and denies any known drug allergies. He has not sought treatment for the lesions and has no relevant family history of skin diseases. His social history is notable for multiple sexual partners and occasional recreational drug use.Onset: Lesions appeared 2 weeks after a sexual encounter.Triggers: Unprotected sexual intercourse.Prior treatments: None for current lesions.Past medical history: No significant medical history.Family history: No known hereditary skin conditions.Social history: Multiple sexual partners, occasional recreational drug use.
Acute / First-Line ManagementBenzathine penicillin G: 2.4 million units intramuscularly, administered as a single dose.Doxycycline: 100 mg orally twice daily for 14 days, if penicillin allergy is present.Azithromycin: 2 g orally as a single dose is an alternative for those unable to receive penicillin.Workup and Diagnostic ConfirmationSerologic tests: Rapid plasma reagin (RPR) and Treponema pallidum particle agglutination (TP-PA) tests are essential for diagnosis.CSF analysis: Considered if neurological symptoms are present.HIV testing: Recommended due to high-risk sexual behavior.Long-Term ManagementFollow-up serology: Repeat RPR at 6 and 12 months to assess treatment response.Safe sex practices: Educate on the importance of practicing safe sex to prevent reinfection.Partner notification: Encourage notification and treatment of sexual partners.
Granuloma annulare: Presents with annular plaques, often asymptomatic, and primarily affects the dorsal surfaces of hands and feet.Psoriasis: Characterized by well-defined red plaques with silvery scales, typically located on extensor surfaces, with a family history often present.Contact dermatitis: May cause localized erythema and papules, often associated with exposure to irritants or allergens.Drug eruption: Can manifest as diffuse papules or urticaria following medication intake, often with a history of recent drug exposure.Scabies: Itching and papular eruptions typically occur in intertriginous areas, with burrows visible on examination.Viral exanthems: Common childhood infections may present with rash, but systemic symptoms such as fever and malaise are often present.Secondary syphilis: Characterized by copper-colored lesions on palms and soles, often associated with systemic manifestations.Secondary cutaneous leishmaniasis: Presents with papules and plaques, particularly in endemic regions, often with a history of travel.
High-Yield PearlsClassic lesions: Copper-colored papules on palms and soles are characteristic of secondary syphilis.Serology: RPR and TP-PA tests are crucial for diagnosis.Penicillin: Benzathine penicillin G is the first-line treatment for syphilis.Partner notification: Essential for controlling transmission and preventing reinfection.Follow-up: Monitoring serologic response is necessary to ensure treatment efficacy.Remember, the skin can be a window to systemic disease; always consider underlying infections in atypical presentations.
Tags: secondary syphilis, Treponema