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New trends in Mediterranean spotted fever
F Segura-Porta1, B Font-Creus, E Espejo-Arenas
1Hospital de Sabadell, Servicio de Medicina Interna, Spain.
Abstract:
Mediterranean Spotted Fever is a disease caused by Rickettsia conorii. It is endemic to the Mediterranean area, where, for the last few years, the number of cases has increased, possibly due, in part, to climatic factors. The main clinical aspects of a prospective series of 246 cases diagnosed from 1983 to 1988 are presented. The most characteristic manifestations were fever, exanthema and tache noire. Other frequent manifestations were headache, myalgia and arthralgia, and with lesser frequency, hepatomegaly, splenomegaly, gastrointestinal symptoms and conjunctivitis. Notable analytical changes are the rise of hepatic and muscular enzymes in a large number of patients. In some cases we have found signs of myositis in muscular biopsy. The evolution of our patients was usually favorable though serious and even deadly forms of the disease have been described. One of the factors that seems to greatly influence the appearance of these forms is delay in the initiation of effective treatment.
Insights
Mediterranean Spotted Fever, caused by Rickettsia conorii, presents with fever, rash, and a characteristic eschar. Early treatment is crucial for favorable outcomes, as delayed therapy increases the risk of severe disease.
Area of Science:
- Infectious Diseases
- Epidemiology
- Clinical Medicine
Background:
- Mediterranean Spotted Fever (MSF) is caused by Rickettsia conorii.
- The incidence of MSF has been increasing in the Mediterranean region, potentially linked to climatic changes.
- Understanding the clinical spectrum and risk factors is vital for effective management.
Purpose of the Study:
- To present the main clinical features of Mediterranean Spotted Fever.
- To analyze the clinical and analytical manifestations in a large cohort of patients.
- To identify factors influencing disease severity and outcomes.
Main Methods:
- Prospective study of 246 patients diagnosed with MSF between 1983 and 1988.
- Detailed recording of clinical signs, symptoms, and laboratory findings.
- Inclusion of diagnostic data from muscle biopsies in some cases.
Main Results:
- Characteristic symptoms included fever, exanthema, and tache noire.
- Commonly observed manifestations were headache, myalgia, and arthralgia.
- Elevated hepatic and muscular enzymes were noted in many patients; myositis was confirmed in some via biopsy.
Conclusions:
- Mediterranean Spotted Fever typically presents with a predictable set of clinical and analytical findings.
- While generally favorable, severe and fatal cases can occur.
- Delayed initiation of effective treatment significantly increases the risk of severe disease and adverse outcomes.