Lymphogranuloma venereum

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Lymphogranuloma venereum
Synonyms	LGV, Climatic bubo, Durand-Nicolas-Favre disease
Pronounce	N/A
Specialty	N/A
Symptoms	Genital ulcer, lymphadenopathy, proctitis
Complications	Chronic pain, fistula, stricture
Onset	3 to 30 days after exposure
Duration	Weeks to months
Types	N/A
Causes	Chlamydia trachomatis (serovars L1, L2, L3)
Risks	Unprotected sex, multiple sexual partners
Diagnosis	Nucleic acid amplification test, serology
Differential diagnosis	Syphilis, herpes simplex, inguinal hernia
Prevention	Condom use, safe sex practices
Treatment	Antibiotics (e.g., doxycycline, erythromycin)
Medication	N/A
Prognosis	Good with treatment
Frequency	Rare in developed countries, more common in tropical and subtropical regions
Deaths	N/A

Lymphogranuloma venereum (LGV) is a sexually transmitted infection caused by certain serovars of the bacterium Chlamydia trachomatis. It is more frequently encountered in tropical and subtropical regions and is associated with significant morbidity.

Etiology

Chlamydia trachomatis

Chlamydia trachomatis is an obligate intracellular pathogen. The serovars L1, L2, and L3 are specifically associated with LGV. These serovars are adapted to invade the lymphatic system, leading to the characteristic clinical manifestations of the disease.

Clinical Presentation

Initial Symptoms

The infection initially manifests as a small, often unnoticed lesion at the site of entry. This is followed by the swelling of regional lymph nodes, which is the hallmark of LGV.

Chronic Complications

Untreated LGV can progress to chronic, debilitating lymphatic damage, resulting in genital elephantiasis and severe lymphedema.

Diagnosis

Diagnosis is primarily made through nucleic acid amplification tests (NAATs), which detect Chlamydia trachomatis DNA in clinical specimens. Complementing these tests with clinical findings and serologic testing aids in confirming the diagnosis.

Management

Antibiotic Treatment

A course of doxycycline or erythromycin is effective in treating LGV. Early diagnosis and treatment are critical to prevent long-term sequelae.

Prevention Strategies

Preventive measures are critical in controlling LGV spread. These include promoting safe sexual practices, routine screening in high-risk populations, and contact tracing.

Epidemiology

LGV is endemic in many tropical and subtropical regions. Its prevalence in western countries has been on the rise, likely due to increased international travel and changing sexual behaviors.

Public Health Impact

The resurgence of LGV has significant implications for public health, particularly in light of the HIV epidemic, as LGV increases the risk of HIV transmission.

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