excess antigen against Feleuk can
cause systemic vasculitis (the body attacks its own blood vessels) , glomerulonephritis (the body attacks it's own kidneys), polyarthritis (the body attacks it's own joints), and a variety of other immune disorders.
5. Gastroenteritis: anorexia, depression, vomiting, and diarrhea.
Since Feleuk can cause problems anywhere in the body, the symptoms would depend upon where the disease is located.