Post-infectious:
(1) viral upper respiratory infection (Influenza, Coxsackie, other)
(2) Mycoplasma pneumoniae
(3) Epstein-Barr virus (EBV)
(4) Cytomegalovirus (CMV)
(5) HIV
(6) Herpes simpex virus (HSV)
(7) viral hepatitis A or C
(8) Campylobacter jejuni infection
(9) Escherichia coli
(10) other Gram-negative enteric bacteria
(11) malaria
(12) toxoplasmosis
Paraneoplastic Guillain-Barre:
(1) Hodgkin's disease
(2) chronic lymphocytic leukemia (CLL)
Other:
(1) hyperthyroidism
(2) autoimmune disease
(3) sarcoidosis
(4) pregnancy
(5) surgery
(6) bone marrow transplantation
(7) envenomation
(8) drug therapy
(9) renal disease
(10) post-vaccination (if capable of inducing anti-ganglioside antibodies)
