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Sampling methods |
Clinical exam |
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Fever, fatigue, lymphadenopathy, downward weight curve;
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Acute, subacute or chronic skin damage (photosensitive);
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Oral/nasal ulceration;
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Alopecia;
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Vasculitis;
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Livedo reticularis;
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Subungual telangiectasia;
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Raynaud’s phenomenon;
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Synovitis, serositis (Pericarditis, pleuritis), symmetrical polyarthritis at the metacarpophalangeal, proximal interphalangeal and knee joints (rarely erosive);
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Neuropsychiatric manifestations (convulsions, psychosis, mononeuritis multiplex, myelitis, peripheral or cranial neuropathy and acute confusional state);
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Renal damage objectified by proteinuria, cellular casts and alteration of renal function;
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pre-moisten swabs
skin surface scrapes
tape strips
skin biopsies
nasal tamponade;
nasal wash;
nasopharyngeal mucus examination;
saliva/sputum;
oral tamponade;
hypopharyngeal/bronchoalveolar/gastric aspirate;
pharyngeal exudate;
bronhoalveolar lavage;
brushing/bronchial biopsy;
stool sample;
rectal tamponade;
urine/semen/vaginal secretions examination;
vaginal scraping/biopsy;
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Clinical investigations |
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Blood count: pancytopenia (leukopenia/lymphopenia, thrombocytopenia, hemolytic anemia);
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Renal tests (urea, creatinine);
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Immunological investigations (ANA, anti-dsDNA, anti-Smith, anti-phospholipid, anti-ribonuclear, anti-Ro, anti-La, hypocomplementemia, and direct coombs test);
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Skin/renal biopsy;
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Ultrasonography;
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Spinal puncture with cerebrospinal fluid analysis;
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MRI;
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Diagnosis |
ACR (1997)
Skin eruptions of the malar/discoid type;
Objectives of photosensitivity;
Oral or nasal ulcers;
Non-erosive arthritis at the level of the second/several joints;
Serositis;
Renal manifestations;
Neurological manifestations;
Hematological manifestations;
Immunological abnormalities;
SLICC
EULAR/ACR
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Remarks |
Differential diagnosis in childhood:
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✓
Cytomegalovirus, Epstein Barr, Parvovirus 19, HIV;
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✓
Bacterial sepsis, Brucella, Leptospira;
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✓
Q fever, tuberculosis, Lyme disease;
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✓
Leukemia, lymphoma, neuroblastoma, histiocytosis;
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✓
Autoimmune diseases;
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✓
Medications that induce lupus;
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