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[Gonococcal arthritis]
Abstract:
Gonococcal arthritis, a rare complication of gonorrhoea, more frequent in women, causes polyarthritis in 75% of cases or monoarthritis. An erythematous skin rash or acute pustular rash (40%), recent signs of genital infection (75% of cases in man, less than 50% in women) suggest the diagnosis. The gonococcal nature of the arthritis is confirmed by isolation of the germ in the joint fluid, the blood and the skin biopsies. In about half the cases, these bacteriological investigations are negative, but the diagnosis remains very probable if the germ is isolated from one or other of the primary foci of the infection: ureter, cervix, vagina, rectum and even pharynx. The rapidly favourable course under antibiotic treatment with penicillin or ampicillin confirms the diagnosis. The pathogenesis of arthritis is a direct toxic action of the gonococcus on the synovial membrane and the periarticular structures. The role of circulating immune complexes recently demonstrated in gonococcemia is probably not relevant.
Insights
Gonococcal arthritis, a complication of gonorrhoea, often presents as polyarthritis or monoarthritis with a characteristic rash. Diagnosis involves identifying Neisseria gonorrhoeae in joint fluid or primary infection sites, confirmed by antibiotic treatment response.
Area of Science:
- Infectious Diseases
- Rheumatology
- Microbiology
Context:
- Gonococcal arthritis is a rare but significant complication of Neisseria gonorrhoeae infection.
- It disproportionately affects women and can manifest as polyarthritis or monoarthritis.
- Clinical presentation often includes an erythematous or pustular skin rash and signs of urogenital infection.
Purpose:
- To outline the diagnostic criteria for gonococcal arthritis.
- To describe the microbiological and clinical methods for confirming the diagnosis.
- To elucidate the pathogenesis and treatment of gonococcal arthritis.
Summary:
- Gonococcal arthritis presents as polyarthritis (75%) or monoarthritis, often accompanied by a skin rash (40%) and genital infection signs.
- Diagnosis is confirmed by isolating Neisseria gonorrhoeae from synovial fluid, blood, or skin biopsies, or from primary infection sites (urethra, cervix, etc.).
- A rapid positive response to antibiotics like penicillin or ampicillin supports the diagnosis, with pathogenesis linked to direct gonococcal toxicity on synovial membranes.
Impact:
- Improved diagnostic accuracy for gonococcal arthritis, especially when bacteriological samples are negative.
- Enhanced understanding of the disease's pathogenesis, differentiating direct toxicity from immune complex involvement.
- Guidance for effective antibiotic treatment strategies, leading to favorable clinical outcomes.