Although anti-neutrophil antibodies (ANAs) often exist and immunoreaction may be involved in agranulocytosis, few reports have so far described ANA-positive cases of agranulocytosis with an unknown etiology. We herein describe the case of a 69-year-old woman who presented with ANA-positive agranulocytosis. In this case, both the withdrawal of the drugs that had possibly caused neutropenia and t...

Background. Chlorpromazine and trimethoprim-sulfamethoxazole (TMP/SMX) are two commonly prescribed medications by physicians. Either of those medications could cause fatal drug-induced agranulocytosis, with an unclear underlying mechanism. The likelihood of simultaneous prescription of both medications is high and could hypothetically result in severe agranulocytosis that is resistant to treatm...

Thyrotoxicosis is a common endocrine disorder. Antithyroid drug therapy is the standard treatment for this disease, especially in young women of reproductive age. A serious side effect of antithyroid drug use, however, is agranulocytosis. We report on two patients with antithyroid drug-induced agranulocytosis. Both patients presented with fever and severe neutropenia. The administration of gran...

The United States Public Health Service Administration is alerting medical professionals that a substantial percentage of cocaine imported into the United States is adulterated with levamisole, a veterinary pharmaceutical that can cause blood cell disorders such as severe neutropenia and agranulocytosis. Levamisole was previously approved in combination with fluorouracil for the treatment of co...

Drug-induced neutropenia is characterized by a sharp decrease in the absolute neutrophil count (ANC) to <500/mm; agranulocytosis is said to be present once the granulocyte count reaches zero. Although associated with a large variety of drugs, this adverse effect is rare, occurring in 2.4–15.4 cases per million courses of therapy [1]. Because of its efficacy and relative safety, ceftriaxone is c...

Agranulocytosis is a rare and little-known side effect of hydroxychloroquine use. This report describes the case of a 71-year-old woman with poorly controlled rheumatoid arthritis who developed agranulocytosis after several months of hydroxychloroquine therapy. She had been on several different disease-modifying antirheumatic drugs, including methotrexate and leflunomide, for her rheumatoid art...

A review of the available literature to date shows 1914 casest of thyrotoxicosis in which thiouracil was employed. This does not include the use of thiourea or other related compounds nor the use of thiouracil in any condition but thyrotoxicosis. Forty-four cases (1.3 per cent) had resulting agranulocytosis, and of these, i per cent) died because of the agranulocytosis. Ninety-three patients pe...

BACKGROUND Since the publication of a major international case-control study on the risk of agranulocytosis associated with the use of medicines in the 1980s, many new drugs have been introduced in therapeutics. METHODS Seventeen units of hematology contribute to the case-control surveillance of agranulocytosis and aplastic anemia in Barcelona, Spain. After a follow-up of 78.73 million person...