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Bacterial infections (for example, with streptococcus, staphylococcus, or pneumococcus)
Parasitic infections (for example, malaria)
Viral infections (for example, hepatitis B and hepatitis C or HIV infections)
Vasculitis (blood vessel inflammation)
Eosinophilic granulomatosis with polyangiitis
Granulomatosis with polyangiitis
Systemic lupus erythematosus (lupus)
Drugs (for example, quinine, gemcitabine, mitomycin C, or certain chemotherapeutic drugs)
HIV = human immunodeficiency virus.