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Related Concept Videos

Endocarditis II: Clinical Features of Infective Endocarditis01:25

Endocarditis II: Clinical Features of Infective Endocarditis

Endocarditis can present various clinical features depending on the causative organism and the patient's underlying health conditions. Initially, the clinical features of infective endocarditis develop gradually, presenting with nonspecific symptoms that can be easily mistaken for other illnesses.General SymptomsEarly symptoms of infective endocarditis are fever, chills, weakness, malaise, fatigue, and weight loss. These symptoms reflect the systemic nature of the infection and the body's...
Sexually Transmitted Infections01:26

Sexually Transmitted Infections

Sexually transmitted infections (STIs) are diseases transmitted primarily through unsafe sexual interactions. Bacteria, viruses, or parasites cause them and can result in severe health complications if untreated.ChlamydiaThe bacterium Chlamydia trachomatis is responsible for the disease Chlamydia, the most common STI in the United States. This peculiar pathogen requires human cells to reproduce, residing intracellularly. The initial infection often goes unnoticed because it typically does not...
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Genital Herpes

Genital herpes is a sexually transmitted infection primarily caused by herpes simplex virus type 2 (HSV-2), though herpes simplex virus type 1 (HSV-1) is increasingly implicated in genital infections, particularly among younger populations. Transmission occurs mainly through sexual contact, with asymptomatic viral shedding serving as a major route of spread. This characteristic makes HSV-2 difficult to control at a population level, as individuals may unknowingly transmit the virus even in the...
Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
Rocky Mountain Spotted Fever01:26

Rocky Mountain Spotted Fever

Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
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Related Experiment Video

Updated: Jun 13, 2026

Procedures for In Vitro Cultivation of Treponema pallidum, the Syphilis Spirochete
09:45

Procedures for In Vitro Cultivation of Treponema pallidum, the Syphilis Spirochete

Published on: January 24, 2025

[Clinical presentation of syphilis].

David Farhi1, Nicolas Dupin

  • 1Cabinet de dermatologie-vénéréologie, 75013 Paris. farhidavid@yahoo.fr

La Revue Du Praticien
|May 15, 2010
PubMed
Summary

Syphilis incidence is increasing, particularly among men who have sex with men and HIV-positive individuals. Early syphilis treatment involves benzathine penicillin G, while neurosyphilis requires intravenous penicillin G.

Area of Science:

  • Infectious Diseases
  • Public Health
  • Dermatology

Context:

  • Syphilis incidence has risen globally since 2000, with a significant increase in France.
  • The primary demographic affected are men who have sex with men (MSM), with half of cases occurring in HIV-positive patients.
  • Risk factors include multiple partners and unprotected sexual contact, with 80% of recent diagnoses being symptomatic (primary or secondary syphilis).

Purpose:

  • To review the current epidemiology, clinical presentation, and treatment of syphilis in the post-HAART era.
  • To highlight the importance of early diagnosis and appropriate treatment to prevent sequelae, especially ophthalmic complications.
  • To provide updated treatment guidelines for early syphilis and neurosyphilis.

Summary:

  • Syphilis is increasing in developed countries, predominantly in MSM and HIV-positive individuals.

Related Experiment Videos

Last Updated: Jun 13, 2026

Procedures for In Vitro Cultivation of Treponema pallidum, the Syphilis Spirochete
09:45

Procedures for In Vitro Cultivation of Treponema pallidum, the Syphilis Spirochete

Published on: January 24, 2025

  • Clinical manifestations include skin and mucosal lesions, with potential for extra-cutaneous involvement, particularly in secondary syphilis.
  • Treatment recommendations include a single dose of benzathine penicillin G for early syphilis and intravenous penicillin G for neurosyphilis, with similar outcomes in HIV-infected and uninfected patients.

    • Impact:

    • Informs public health strategies for syphilis control and prevention, especially in at-risk populations.
    • Guides clinicians on timely diagnosis and management of syphilis, reducing the risk of long-term complications.
    • Contributes to updated treatment protocols, ensuring effective management of syphilis, including neurosyphilis.