Peripheral blood lymphocytes from both drug-induced immediate and delayed cutaneous hypersensitivity reactions frequently can be stimulated in vitro with the particular culprit drug. Immunohistochemical analysis has identified CD8+ T cells as the predominant epidermal T-cell subset in drug-induced maculopapular and bullous eruptions and in patch-test reactions to beta-lactam antibiotics. Beta-l...

With the aim of identifying the etiology of acute febrile illness in patients suspected of having dengue, yet with non reagent serum, a descriptive study was conducted with 144 people using secondary serum samples collected during convalescence. The study was conducted between January and May of 2008. All the exams were re-tested for dengue, which was confirmed in 11.8% (n = 17); the samples th...

Familial Mediterranean fever (FMF) is the most common hereditary autoinflammatory disease in the world. It shows a high prevalence in countries bordering the eastern Mediterranean. The course of the disease is marked by short and self-limiting bouts of fever, often with a monthly periodicity; other clinical manifestations include serositis and synovitis. Mutations of the cold-induced autoinflam...

N Engl J Med 2004;350:586-97. Copyright © 2004 Massachusetts Medical Society. vonne cossart, an australian virologist working in london in the mid-1970s, noted an anomalous reaction of a normal blood donor’s serum (occupying position 19 in plate B) in an assay for hepatitis B. When Cossart excised the line of antigen–antibody precipitation, she saw the particles shown in Figure 1A, and in this ...

Drug reactions (DR) are adverse or harmful effects of drugs. They constitute 6.5% of all hospital admissions. DR develops with a rate of 15% in patients who are treated by hospitalization. The possibility of DR should be considered in the differential diagnosis when any medical problem occurs in a person who uses medication. Detailed history and physical examination are directive in differentia...

Human herpesvirus 6 (HHV-6) infection in recipients of cord blood stem cell transplants (CBSCTs) was estimated by semiquantitative and real-time quantitative polymerase chain reaction (PCR) and reverse-transcription PCR. Of the CBSCT recipients, 7 (70%) of 10 had active HHV-6 infection after transplantation, and all 7 were inferred from their age to have already had a primary infection. Because...

HHV-6 has been identified as the aetiologic agent of exanthem subitum in infants and an acute febrile illness in young children. HHV-6 probably remains latent in the body after the primary infection and it reactivates upon host immunosuppression in a manner similar to other human herpes viruses. Primary HHV-6 infection in adults is very rare and it is not clear whether disease manifestations ar...

Familial Mediterranean fever (FMF) is the most common hereditary autoinflammatory disease in the world. It shows a high prevalence in countries bordering the eastern Mediterranean. The course of the disease is marked by short and self-limiting bouts of fever, often with a monthly periodicity; other clinical manifestations include serositis and synovitis. Mutations of the cold-induced autoinflam...

INTRODUCTION Allopurinol is a widely-prescribed urate-lowering agent. Allopurinol hypersensitivity syndrome, a severe form of cutaneous adverse reaction, is associated with significant mortality and morbidity. The aim of this study was to document the clinical presentation of allopurinol hypersensitivity in a local population, examine the indications for urate-lowering therapy and to identify p...