Eosinophilic Granulomatosis with Polyangiitis (EGPA) and Hepatitis B Infection - A Rare Association.

Eosinophilic Granulomatosis with Polyangiitis (EGPA) or Churg-Strauss syndrome is a rare systemic illness which is characterized by necrotizing inflammation of small and medium sized vessels. The prominent features include asthma, eosinophilia, transient pulmonary infiltration and systemic vasculitis. Various triggering factors have been reported as putative aetiological agents of Churg-Strauss syndrome. They include infections, allergic desensitization, vaccinations like hepatitis B and influenza vaccination, cocaine abuse, drugs like leukotriene receptor antagonists and exposure to pigeons. We report a rare case of Churg-Strauss syndrome co-infected with Hepatitis B Virus (HBV). Very few such cases have been reported in the past.