Hepatic |
3.9.2) CLINICAL EFFECTS
A) LARGE LIVER 1) WITH POISONING/EXPOSURE a) Moderate hepatomegaly may be noted in 10% to 40% of patients; liver may be tender (Malik, 1997; Mohd, 1989) Mousa, 1988; Al-Eissa, 1990; (Benjamin & Annobil, 1992). This may be more common in children; in 5 pediatric studies, incidences between 27% and 69% were noted (Galanakis, 1996; Gottesman, 1996).
|
Genitourinary |
3.10.2) CLINICAL EFFECTS
A) DYSURIA 1) WITH POISONING/EXPOSURE a) Patients may present with UTI symptoms, including dysuria (Mousa, 1988; Robson, 1993; Yinnon, 1993). In one large series, brucellosis was highly associated with prostatitis in men (Colmenero, 1996).
B) PAIN 1) WITH POISONING/EXPOSURE a) Patients may present with UTI symptoms, including suprapubic or loin pain (Mousa, 1988). b) Testicular edema and pain may be present in males with epididymo-orchitis (Lulu, 1988; (Khan et al, 1989) Patel, 1988; Reisman, 1990).
C) URGENT DESIRE TO URINATE 1) WITH POISONING/EXPOSURE a) Patients may present with UTI symptoms, including urinary frequency and urgency, especially during the subacute and chronic stages (Lulu, 1988; Mousa, 1988). In one large series, brucellosis was highly associated with prostatitis in men (Colmenero, 1996).
D) IMPOTENCE 1) WITH POISONING/EXPOSURE a) Impotence may occur in patients with chronic infection (Trujillo, 1994; (Radolf, 1994).
E) ORCHITIS 1) WITH POISONING/EXPOSURE a) Orchitis is usually unilateral; presents with acute scrotal pain and swelling, with little or no dysuria; does not cause sterility; also may involve epididymis and may be bilateral (Patel, 1988; (Khan et al, 1989) Reisman, 1990; Ibrahim, 1988; (Afsar et al, 1993). Systemic symptoms precede genitourinary complaints in about 3/4 of cases, but may present simultaneously (Colmenero, 1996).
F) NEPHRITIS 1) WITH POISONING/EXPOSURE a) Diffuse interstitial nephritis with azotemia, proteinuria, and hypertension may occur with renal involvement (Trujillo, 1994; (Radolf, 1994). A case of acute focal bacterial nephritis with normal renal function has also been described (Loberant, 1995).
G) DISORDER OF PROSTATE 1) WITH POISONING/EXPOSURE a) In one large series, prostatitis occurred in about 1% of male patients and presented with urinary symptoms (dysuria, frequency, urgency, sensation of incomplete voiding). Biopsy in 2 patients showed chronic inflammation with granuloma formation (Colmenero, 1996).
|
Summary Of Exposure |
A) ACUTE stage (signs and symptoms present <2 mo after infection) characterized by acute febrile flu-like illness with chills, sweats, headache, myalgia, arthralgia, and weakness, usually without any localizing signs. Onset may be sudden or insidious; prolonged recovery, even with antibiotic therapy. Incubation period is 3 to 5 days to several weeks. Relapses are common. Symptoms and signs are nonspecific. B) SUBACUTE stage: Signs and symptoms present 2 to 12 mo; similar to acute stage. C) CHRONIC stage (signs and symptoms present >12 mo): Uncommon following adequate treatment of acute illness; neuropsychiatric symptoms predominate; characterized by fever, malaise, headache, anxiety, depression; treated persons with chronic illness usually have suppurative localization (especially of bone or joints). D) Symptoms and signs are similar in patients with presumed oral, aerosol, or percutaneous infection. The bacterium disseminates throughout the reticuloendothelial system, thus it may cause disease in almost any organ system. Favored targets include large joints and axial skeleton. Approximately one-third of patients are affected with arthritis. E) Fatalities are rare and usually occur in association with central nervous system disease or endocardial infection.
|
Vital Signs |
3.3.3) TEMPERATURE
A) WITH POISONING/EXPOSURE 1) FEVER - Brucellosis is characterized by acute febrile illness, with flu-like manifestations; fever present at some time in most patients and is often accompanied by chills (Malik, 1997; Schussler et al, 1997; Taylor & Perdue, 1989) Lulu, 1988; (Mohd, 1989) Al-Eissa, 1990; Mousa, 1988; Chomel, 1994; Robson, 1993; Yinnon, 1993; Colmenero, 1996; Galanakis, 1996). Fever is also a common feature of chronic infection (Lulu, 1988). a) Most commonly, temperature is normal or slightly elevated in morning and rises in afternoon; maximum daily temperature ranges from 101 F to 104 F (Trujillo, 1994; (Radolf, 1994). b) Chills may be present in up to 70% to 80% of patients in the acute or subacute stages (Al-Eissa, 1990; Lulu, 1988; Mousa, 1988; (Taylor & Perdue, 1989) Yinnon, 1993). Chills may occur in about 50% of patients during the chronic stage of illness (Lulu, 1988).
2) HYPOTHERMIA as a presenting sign of brucellosis in an elderly person has been reported (Vales, 1993), but this is not an expected occurrence in the majority of patients. |
Heent |
3.4.3) EYES
A) WITH POISONING/EXPOSURE 1) Visual changes secondary to uveitis can be seen in acute or chronic cases and can be unilateral or bilateral. In severe cases, hypopyon may occur. Acute endophthalmitis has also been reported (Al-Kaff, 1995). 2) In chronic disease, smoldering uveitis and nodular choroiditis with adjacent retinal edema and hemorrhages are described most commonly. Vitreous exudates, cystoid macular edema, and retinal detachment have been reported (Al-Kaff, 1995). 3) Optic nerve involvement may occur in up to 10% of patients and may present with papillary congestion, retrobulbar neuritis, papilledema, or chiasmal arachnoiditis (Al-Kaff, 1995).
3.4.5) NOSE
A) WITH POISONING/EXPOSURE 1) EPISTAXIS - Nasal bleeding, usually mild and not related to marked thrombocytopenia or DIC, may be present in about 2% of patients (Galanakis, 1996; Colmenero, 1996).
|
Dermatologic |
3.14.2) CLINICAL EFFECTS
A) EXCESSIVE SWEATING 1) WITH POISONING/EXPOSURE a) ACUTE disease - Night sweats is a common feature, present in up to 90% of patients (Al-Eissa, 1990; Lulu, 1988; Mousa, 1988; (Mohd, 1989) Shehabi, 1990); often profuse with characteristic moldy odor (Mousa, 1988). 1) Diaphoresis may be less common in children; in two pediatric studies, sweating was present in <20% of patients and classic odor was rare (Galanakis, 1996; Gottesman, 1996).
b) CHRONIC disease - Increased sweating was noted in about two thirds of patients (Lulu, 1988). B) ERUPTION 1) WITH POISONING/EXPOSURE a) Reported dermatologic manifestations include (Nagore, 1999; Ariza, 1989): 1) Disseminated, well-defined, violet-erythematous papulonodular eruption with smooth surface located on trunk, forearms, thighs, and legs; lesions range in size from few millimeters to >1 cm; may be few to >100 lesions; may show central ulceration; occasionally may be pruritic. 2) Erythematous violaceous nodules over extensor surfaces of legs in erythema nodosum-like pattern. 3) Extensive purpura. 4) Diffuse maculopapular rash, mainly affecting lower extremities.
b) Rash does not appear to worsen prognosis and resolves within a few days after starting appropriate treatment (Nagore, 1999). |
Musculoskeletal |
3.15.2) CLINICAL EFFECTS
A) MUSCLE PAIN 1) WITH POISONING/EXPOSURE a) Muscle pain may be present in up to 75% of patients, most commonly during the subacute stage (Lulu, 1989; Mousa, 1987a, 1988; Khateeb, 1990; Robson, 1993; (Applebaum & Mathisen, 1997). It appears to be more common in children than adults (Zaks, 1995).
B) BACKACHE 1) WITH POISONING/EXPOSURE a) Back pain is the most frequent osteoarticular manifestation, present in 60% to 70% of patients (Malik, 1997) Cordero-Sanchez, 1990; Khateeb, 1990; (Taylor & Perdue, 1989) Mousa, 1988; Lulu, 1988; Robson, 1993; (Applebaum & Mathisen, 1997). It may be a nonspecific symptom in context of osteoarticular aches associated with the disease (Cordero-Sanchez, 1990) or may be related to sacroiliac involvement or involvement of spine and adjacent areas (Ozgul, 1998; Cordero-Sanchez, 1990; Rajapakse, 1987; Al-Rawi, 1989; Mohan, 1990; (Applebaum & Mathisen, 1997). b) In acute brucellosis, pain is typically related to back muscles; in chronic cases, low back pain is a prominent feature (Bahar, 1988).
C) JOINT PAIN 1) WITH POISONING/EXPOSURE a) Joint pain without other signs of inflammation is a common complaint, noted in 1/3 of to 3/4 of cases; more common in children (peak in ages 2 to 6 yr) where incidences up to 83% have been noted (Malik, 1997) Zaks, 1995; Colmenero, 1996; Gottesman, 1996; Khateeb, 1990; (Sharda & Lubani, 1986) Mousa, 1987a, 1988; Al-Eissa, 1990; (Alvarez De Buergo et al, 1990; Mohd, 1989) Shehabi, 1990; Lulu, 1988; (Lubani et al, 1986a) Benjamin, 1992a; Yinnon, 1993). b) Usually the joint paint is monoarticular and unilateral; sacroiliac joint, knee, and hip are affected most frequently; spine, ankle, sternoclavicular joint, shoulder, wrist, and elbow are involved less commonly (Lulu, 1988; Mousa, 1987a, 1988; Al-Essia, 1990; Khateeb, 1990; (Sharda & Lubani, 1986) Mousa, 1988; (Alvarez De Buergo et al, 1990; Lubani et al, 1986a) Benjamin, 1992a, 1994; Knapp, 1994; Berrocal, 1993). c) Peripheral large joint involvement is more common in children and young adults (Alvarez De Buergo et al, 1990; Lubani et al, 1986a) Al-Essia, 1990; (Sharda & Lubani, 1986) Mousa, 1987a, 1988; Benjamin, 1992a, 1994; Knapp, 1994; Galanakis, 1996; Gottesman, 1996). d) Involvement of small and centrally placed joints and spondylitis is often more common in adults (Mousa, 1987, 1988; Ariza, 1993; Colmenero, 1996). e) Joint effusion may be present in patients with Brucella arthritis, particularly during the acute stage; primarily elicited in knee, ankle, and wrist joints (Khateeb, 1990; Mousa, 1987a; Al-Rawi, 1989; Benjamin, 1992a).
D) ARTHRITIS 1) WITH POISONING/EXPOSURE a) Arthritis is a complication of brucellosis and may be septic or reactive (Alvarex de Buergo, 1990; (Lubani et al, 1986a) Rajapakse, 1990; Bahar, 1988). It may occur during any stage (including relapses) but most common during acute and subacute stages (Khateeb, 1990; (Sharda & Lubani, 1986) Lulu, 1988; (Al-Rawi et al, 1987) 1989; Shaheen, 1988; (Alvarez De Buergo et al, 1990) Mousa, 1987a; Benjamin, 1992a; (Benjamin & Khan, 1994). b) Incidence is highly variable (10% to 70%), depending on pathogenicity of species and diagnostic criteria (Madkour, 1988; Benjamin, 1992a). Brucellosis should be considered in patients with joint pain and fever who come from or have visited an endemic area or have other risk factors (Knapp, 1994; (Benjamin & Khan, 1994). c) Onset may be acute or insidious; most typically occurs simultaneously with or shortly after onset of fever; usually associated with severe limitation of movement and joint pain and tenderness (Alvarez De Buergo et al, 1990) Mousa, 1987a; (Lubani et al, 1986a) Shaheen, 1988; (Al-Rawi et al, 1987) 1989; Benjamin, 1992a, 1994; Knapp, 1994; (Benjamin & Khan, 1994) Ariza, 1993). d) Arthritis is typically monarticular and unilateral; sacroiliac joint most commonly involved in adults, followed by knee, hip, and ankle; spine, sternoclavicular joint, shoulder, wrist, and elbow involved less commonly (Lulu, 1988; Mousa, 1987a, 1988; Al-Essia, 1990; Khateeb, 1990; (Sharda & Lubani, 1986; Alvarez De Buergo et al, 1990; Lubani et al, 1986a) Al-Rawi, 1989; Shaheen, 1988; (Al-Rawi et al, 1987) 1989; Gotuzzo, 1987; Colemnero, 1991, 1996; Benjamin, 1992a, 1994; (Sankaran-Kutty et al, 1991) Berrocal, 1993; Al-Shahed, 1994; Knapp, 1994). Large peripheral joint (knee, hip) involvement is more common in children and young adults (Al-Essia, 1990; (Benjamin & Annobil, 1992) 1992a, 1994; Mousa, 1987a, 1988; (Lubani et al, 1986a) Knapp, 1994; Galanakis, 1996). e) In most cases, the ESR is only moderately elevated and WBC count is normal with relative lymphocytosis. This, along with a more indolent presentation and moderate local signs of inflammation, helps differentiate from an acute septic arthritis (Lubani et al, 1986a). f) CASE SERIES - In a prospective study of 263 patients with brucellosis, hip joint involvement was found in 33 (20.4%) of 162 patients with osteoarticular form of the disease. Patients with hip arthritis were younger, with a mean age of 23.7 years (+/- 19.9 years {range 4 to 69}), compared with a mean age of 39.7 years (+/- 18.2 years) in the patients without hip involvement. In 21 cases, the disease was acquired through direct contact with infected animals, 10 developed disease after ingestion of an incriminated product, and in 2 the origin was unknown. In 5 patients, hip arthritis was the only clinical feature of brucellosis exposure. 1) Time between onset of symptoms and diagnosis was 43.8 days (+/- 44.5 {range 5 to 180 days}). The most dominant laboratory findings were elevation of circulating immune complexes (>0.05 g/L) and C-reactive protein (>8 mg/L). Unilateral reports of hip pain were common. 2) Clinical manifestations in these 33 patients included fever (22); sweating (22); arthralgia (27); Malaise (16); headache (18); weight loss (4); hepatomegaly (15); splenomegaly (9); and lymphadenopathy (8). 3) In most patients treatment consisted of doxycycline/rifampin/co-trimoxasole or rifampin/co-trimoxasole combination. Twenty-two patients were cured with one course of antibiotic therapy (Bosilkovski et al, 2004).
E) SPONDYLITIS 1) WITH POISONING/EXPOSURE a) The incidence of brucellosis spondylitis is highly variable (2% to 60%); common manifestation of chronic brucellosis (Gonzalez-Gay, 1999; Bahar, 1988; (Sankaran-Kutty et al, 1991) Ariza, 1993); often associated with neurobrucellosis (Mousa, 1989; Mohan, 1990; Colmenero, 1991, 1992) or sacroiliitis (Ariza, 1993). It primarily involves the intervertebral area of the lumbar or dorsal spine; cervical spine and sacroiliac region involved less frequently (Mousa, 1987a; Bahar, 1988; Al-Rawi, 1989; Rajapakse, 1990; Mohan, 1990; Colmenero, 1991, 1992; Cordero, 1991; Al-Shahed, 1994).
|
Immunologic |
3.19.2) CLINICAL EFFECTS
A) LYMPHADENOPATHY 1) WITH POISONING/EXPOSURE a) Small, non-tender cervical, inguinal or axillary lymph nodes are present in 10% to 20% of patients (Mohd, 1989) Al-Eissa, 1990; Mousa, 1988). In one study, lymphadenopathy was present in 80% of children; other pediatric studies, however, have found much lower incidences and one found the incidence was not different from normal children (Yinnon, 19993; Galanakis, 1996; Gottesman, 1996).
B) MULTIPLE ORGAN DYSFUNCTION SYNDROME 1) WITH POISONING/EXPOSURE a) Complications involving multiple organ systems occur in up to 30% of all patients, most commonly those infected with B melitensis or B suis; rate increases if treatment is delayed, and about 1/2 of patients with a diagnostic delay >3 months experience complications (Trujillo, 1994; (Radolf, 1994) Lulu, 1988; Colmenero, 1996). May be initial presentation (Gelfand et al, 1989) Jayakumar, 1988). 1) CARDIOVASCULAR: Endocarditis (Chan & Hardiman, 1993); myocarditis; pericarditis; arterial and intracranial aneurysms; arteriovenous fistulas (Lubani et al, 1986; Yee & Roach, 1996). 2) RESPIRATORY: Pneumonia; bronchitis; pleurisy; pleural effusion; granulomatous lung abscess; mediastinitis; empyema (Garcia-Rodriguez, 1989; Lubani, 1989b; (Mili et al, 1993; Al-Eissa, 1993a). 3) GASTROINTESTINAL: Hepatitis (Aygen, 1998; Talley, 1988); hepatic and splenic granulomas or abscesses (Satti, 1990; Vargas, 1991); portal cirrhosis; cholecystitis (Odeh & Oliven, 1995) Shaheen, 1989); ileitis; pancreatitis (Al-Awadhi et al, 1989); colitis (Stermer, 1991); esophageal lesions (Laso et al, 1994). 4) NEUROLOGIC: Meningitis; meningoencephalitis; peripheral neuropathy/radiculopathy; meningovascular complications (stroke, intracerebral hemorrhage); parenchymatous dysfunction; brain abscess; subdural empyema; cerebellar ataxia (Pina, 1999; (Omar et al, 1997; Shakir, 1986) 1987; Guvenc, 1989; Pascual, 1988; Al-Deeb, 1989; Lubani, 1989a; Bahemuka, 1988; (McLean et al, 1992) Kaleliogh, 1990; (Al-Eissa, 1993a) 1995; (Pera et al, 1996) Shoshan, 1996). 5) MUSCULOSKELETAL: Most common; represents about 2/3 of all complications. Arthritis (septic or reactive); osteomyelitis; tendinitis; bursitis; spondylitis; sacroiliitis (Gonzales-Gay, 1999; (Malik, 1997) Tasdan, 1998; Al-Rawi, 1989; Shaheen, 1988; Mousa, 1987a; Madkour, 1988; Colmenero, 1991; Benjamin, 1992a; Al-Shahed, 1994; (Al-Eissa, 1993a) Colmenero, 1996; (Applebaum & Mathisen, 1997). 6) GENITOURINARY: Diffuse interstitial nephritis; renal abscesses and calcifications; ulceration of renal pelvis, ureter, bladder; ovarian abscess; epididymo-orchitis (Afsar, 1992); acute focal bacterial nephritis (Loberant, 1995); prostatitis (Aygen, 1998); spontaneous abortion (possibly) (Ibrahim, 1988). 7) HEMATOLOGIC: Anemia; neutropenia; thrombocytopenia; acute thrombocytopenic purpura; DIC; pancytopenia (Shalev et al, 1994; Al-Eissa & Al-Nasser, 1993; Benjamin, 1995). 8) DERMATOLOGIC: Disseminated papulonodular or diffuse maculopapular rash; erythema nodosum-like eruption; purpura (Ariza, 1989); subcutaneous abscesses (Gasser, 1991); fasciitis-panniculitis syndrome (Zuckerman, 1994); leukocytoclastic vasculitis (Nagore, 1999). 9) OCULAR: Iritis (Gasser, 1991; Akduman, 1993); choroiditis; keratitis (Tabbara & Al-Kassimi, 1990); endophthalmitis (al Faran, 1990); uveitis with hypopyon; retinal detachment; retrobulbar neuritis (Al-Kaff, 1995). 10) PSYCHIATRIC: Dementia; depression; manic or paranoid behavior; personality changes; psychotic reactions. 11) ENDOCRINE/METABOLIC: SIADH (Aysha & Shayib, 1988); thyroiditis (von Graevenitz & Colla, 1990; Mousa et al, 1989a).
C) ABSCESS 1) WITH POISONING/EXPOSURE a) Patients with chronic brucellosis may develop abscesses in the liver, spleen, genitalia, spine, long bones, soft tissue, or brain (Pina, 1999; Trujillo, 1994; (Radolf, 1994) Vargas, 1991; (Al-Eissa, 1993a). In B suis infection, the spleen and liver may contain multiple abscesses that calcify and appear as round nodules on roentgenograms (Trujillo, 1994; (Radolf, 1994).
D) INFECTIOUS DISEASE 1) WITH POISONING/EXPOSURE a) RECURRENT BRUCELLOSIS may recur within 1 to 3 months in about 5% of cases; due to relapse or reinfection; results in milder febrile illness. Uncommon in patients who receive appropriate therapy; usually represents focal suppurative complications. May occur in persons with continuing exposure, eg, veterinarians and abattoir workers (Trujillo, 1994; (Radolf, 1994). b) Predictors of relapse include temperature of 38.3 C or higher, positive blood cultures at baseline, and duration of symptoms before treatment of more than 10 days (Solera, 1998). Relapses occur in up to 10% of treated patients, usually within 3 to 10 months after initial episode. Symptoms may be milder or more severe than in acute stage; CNS involvement possible (Chia et al, 1990). Relapses are more often related to failure to complete lengthy therapy or focal suppurative complications than to antibiotic resistance (Young, 1995). Extending duration of drug treatment to at least 6 weeks is associated with a reduced relapse rate (Malik, 1997).
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Reproductive |
3.20.1) SUMMARY
A) Transplacental transmission may occur, with subsequent infection of the neonate. Direct cause-and-effect relationship of brucellosis to first- or second-trimester spontaneous abortion is unclear.
3.20.3) EFFECTS IN PREGNANCY
A) PLACENTAL BARRIER 1) Transplacental transmission may occur, with subsequent infection of the neonate (Malone, 1997; (Al-Eissa & Al-Mofada, 1992). One case report documents poor perinatal outcome associated with transplacental passage of the infection, resulting in chorioamnionitis and preterm delivery despite aggressive treatment (Malone, 1997).
B) ABORTION 1) Direct cause-and-effect relationship of brucellosis to first- or second-trimester spontaneous abortion is unclear. Reported incidence ranges from 12% to 31% (Makhseed, 1998; Lulu, 1988; Swoud, 1991; Sarram, 1974; Crisuolo, 1954). Difference in abortive effect of brucellosis in animals and humans may be due to absence of erythritol (a growth stimulant for brucellosis) in human placenta and anti-brucellosis activity of amniotic fluid (Seoud, 1991).
|
Cardiovascular |
3.5.2) CLINICAL EFFECTS
A) ENDOCARDITIS 1) WITH POISONING/EXPOSURE a) Cardiac complications occurred in <2% of a large series; endocarditis is the most common complication and often fatal once established. It accounts for about 80% of deaths due to brucellosis. Most cases are due to B abortus or B melitensis, although cases secondary to B suis have also been reported (Al-Harthi, 1989; Lubani et al, 1986) Fernandez-Guerrero, 1987; Jeroudi, 1987; Jacobs, 1990; Colmenero, 1996; ((Hoover, 2000)). In over half of cases, a previously healthy valve is involved. The aortic valve is affected in over 75% of cases; mitral valve involvement is less common and more likely to occur with previous valvular damage (Al-Harthi, 1989) Jeroudi, 1987; Jacobs, 1990; (Delvecchio et al, 1991; Chan & Hardiman, 1993) Colmenero, 1996). b) Failure to diagnose Brucella endocarditis usually is due to cultured blood being discarded after 8 days (cultures do not become positive for at least 8 days and even for as long as 6 weeks) (Al-Harthi, 1989). Echocardiography usually helpful in detecting valvular vegetations (Jeroudi, 1987; (Lubani et al, 1986) c) Prolonged clinical and subclinical course is common. Virtually all patients require valve replacement, prolonged antibiotic therapy, or both (Chia et al, 1990; Al-Harthi, 1989) Jeroudi, 1987; Al-Kasab, 1988; Fernandez-Guerrero, 1987; (Delvecchio et al, 1991) Jacobs, 1990; (Chan & Hardiman, 1993) Colmenero, 1996; Cohen, 1997).
B) CARDIOVASCULAR FINDING 1) WITH POISONING/EXPOSURE a) Cardiac manifestations of brucellosis should be suspected in patients presenting with a heart murmur and history of ingestion of unpasteurized milk or dairy products (Lubani et al, 1986).
|
Respiratory |
3.6.2) CLINICAL EFFECTS
A) DYSPNEA 1) WITH POISONING/EXPOSURE a) Respiratory symptoms, including dyspnea, may be present in up to 25% of patients (Mousa, 1988). Although respiratory symptoms (cough, pleuritic chest pain, dyspnea) occur, they do not usually denote pneumonia (Franz et al, 1997).
B) COUGH 1) WITH POISONING/EXPOSURE a) Respiratory symptoms, including dry cough, may be present in up to 30% of patients (Mousa, 1988; Lulu, 1988; Lubani, 1989b; Garcia-Rodriguez, 1989; (Benjamin & Annobil, 1992) Robson, 1994; Yinnon, 1993).
|
Neurologic |
3.7.2) CLINICAL EFFECTS
A) HEADACHE 1) WITH POISONING/EXPOSURE a) Headache is a complaint in 20% to 75% of patients, especially during the chronic stage (Malik, 1997) Al-Eissa, 1990; (Mohd, 1989; Taylor & Perdue, 1989) Mousa, 1987a, 1988; Khateeb, 1990; Lulu, 1988; Yinnon, 1993).
B) NEURITIS 1) WITH POISONING/EXPOSURE a) Neurobrucellosis can imitate various neurologic syndromes and conditions. In endemic areas, this should be suspected in patients with obscure or unexplained neurologic deficits, even without a definite history of exposure (Bahemuka, 1988; Al-Eissa, 1995).
C) FATIGUE 1) WITH POISONING/EXPOSURE a) Fatigue, a typical symptom of acute febrile illness, occurs in up to 3/4 of patients; fatigue and weakness may be prolonged (Lulu, 1988; Colmenero, 1996).
D) MALAISE 1) WITH POISONING/EXPOSURE a) Malaise is a typical symptom of acute febrile illness; it is a less common complaint among children (Al-Eissa, 1990; Mousa, 1987a; Benjamin, 1992a; Chomel, 1994; Robson, 1993; Yinnon, 1993; Galanakis, 1996; Gottesman, 1996).
E) NEUROPATHY 1) WITH POISONING/EXPOSURE a) NEUROBRUCELLOSIS - Involvement of central or peripheral nervous system occurs in 2% to 6% of adults (McLean et al, 1992) Bahemuka, 1988; Bashirm 1985; (Shakir, 1986) et al, 1989). This is rare in children, accounting for less than 1% of cases (Habeeb, 1998; (Omar et al, 1997). Although adult and pediatric neurobrucellosis have similar clinical spectrums, cases in adults can be either acute or chronic, whereas in children, it is usually an acute presentation. Peripheral nervous system involvement in isolation or in association with the CNS may occur in 1/3 of adults but has not been reported in children. Pediatric neurobrucellosis usually involves the CNS, and the clinical presentation is mainly as acute meningitis or meningoencephalitis (Habeeb, 1998). 1) Neurobrucellosis may include meningitis, meningoencephalitis; peripheral neuropathy/radiculopathy; meningovascular complications (stroke, intracerebral hemorrhage); parenchymatous dysfunction; brain abscess; subdural empyema; cerebral venous thrombosis, meningomyelitis; cerebellar ataxia (Zaidan & Al Tahan, 1999) Habeeb, 1998; Akdeniz, 1998; (Omar et al, 1997; Shakir, 1986) 1987; Guvenc, 1989; Pascual, 1988; Al-Deeb, 1989; Lubani, 1989a; Bahemuka, 1988; (McLean et al, 1992) Kaleliogh, 1990; Santini, 1994; (Pera et al, 1996) Al-Eissa, 1995; Shoshan, 1996).
F) MENINGITIS 1) WITH POISONING/EXPOSURE a) Bacterial meningitis is an uncommon complication; it may present as an initial manifestation or at any time during the course of disease; it may follow a subclinical course or manifest as acute or chronic infection (Bouza, 1987; Mousa, 1986; (McLean et al, 1992; Al Deeb et al, 1989). b) It mimics other neurologic and non-neurologic conditions; nuchal rigidity is present in only one third of patients (Bouza, 1987; Mousa, 1986). It may be associated with papilledema, optic neuropathy, or radiculopathy (McLean et al, 1992). c) Isolation of Brucella from CSF is uncommon; serologic tests on CSF are preferred (Bouza, 1987; Mousa, 1986; Lubani, 1989a; Al-Eissa, 1995). d) This has a better prognosis than other forms of chronic meningitis. It has a low mortality but high incidence of sequelae; may lead to disorders of vision and hearing, aphasia, ataxia, intermittent coma, hemiplegia (Bouza, 1987; (McLean et al, 1992) Al-Eissa, 1995).
G) CEREBROVASCULAR DISEASE 1) WITH POISONING/EXPOSURE a) Cerebrovascular accident may occur in patients with neurobrucellosis. Cerebral infarction may result from blood vessel thrombosis and spasm secondary to infectious vasculitis; intracerebral or subarachnoid hemorrhage may occur presumably secondary to ruptured mycotic aneurysm (McLean et al, 1992) Colmenero, 1996).
H) SECONDARY PERIPHERAL NEUROPATHY 1) WITH POISONING/EXPOSURE a) POLYRADICULOPATHY: Resembles Guillain-Barre syndrome; legs are more involved than arms. Characterized by slowly progressive flaccid paraparesis associated with backache, areflexia, sensory ataxia. Motor conduction velocities usually are normal but may show motor sensory polyneuropathy. EMG shows signs of denervation (McLean et al, 1992; Al Deeb et al, 1989) Bashir, 1985; (Shakir, 1986) 1987; Oliveri, 1996). b) MONONEURITIS: May affect cranial nerves (Al Deeb et al, 1989). Sensorineural hearing loss secondary to involvement of the 8th cranial nerve has been reported (Shakir, 1986) Lulu, 1988; Thomas, 1993).
|
Gastrointestinal |
3.8.2) CLINICAL EFFECTS
A) LOSS OF APPETITE 1) WITH POISONING/EXPOSURE a) Anorexia is a common presenting symptom of acute stage, noted in up to 75% of cases (Shehabi, 1990; Lulu, 1988; (Taylor & Perdue, 1989) Mousa, 1987a; Mouaket, 1989; (Benjamin & Annobil, 1992).
B) VOMITING 1) WITH POISONING/EXPOSURE a) Vomiting is a presenting symptom in 10% to 20% of cases (Revak, 1989; Al-Eissa, 1990; Lulu, 1988).
C) WEIGHT LOSS FINDING 1) WITH POISONING/EXPOSURE a) Weight loss may be a presenting symptom, particularly during subacute stage; incidence depends on duration of illness prior to diagnosis (Lulu, 1988; Revak, 1989; (Taylor & Perdue, 1989; Sharda & Lubani, 1986) Al-Eissa, 1990). b) Weight loss may be rapid and substantial (Robson, 1993).
D) ABDOMINAL PAIN 1) WITH POISONING/EXPOSURE a) Abdominal pain is present in up to 1/3 of patients (Lulu, 1988; (Alvarez De Buergo et al, 1990) Yinnon, 1993; Gottesman, 1996).
E) SPLENOMEGALY 1) WITH POISONING/EXPOSURE a) One of the few physical signs is splenomegaly. It is present in up to 80% of patients, depending on duration of illness prior to diagnosis (Malik, 1997) Al-Eissa, 1990; Lulu, 1988; Mousa, 1988; Shehabi, 1990; (Mohd, 1989; Benjamin & Annobil, 1992). It may be accompanied by left upper quadrant tenderness (Trujillo, 1994; (Radolf, 1994) Yinnon, 1993).
F) COLITIS 1) WITH POISONING/EXPOSURE a) Severe colitis presenting with abdominal pain and massive rectal bleeding has been reported in patients with brucellosis (Stermer, 1992). Colitis also may be associated with anemia in the absence of overt findings (Jorens, 1991).
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