Table 7.

Yersiniosis (Y. enterocolitica) Symptomatology

Stages	Symptoms
Early stage	Gradual development of gastroenteritis, pharyngitis, complications due to inflammation of the intestinal wall, mesenteric lymphadenopathy.
	Excretory for months after abatement of gastroenteritis
Late stage	Articular manifestations: Reactive arthritis in hip, knee, upper ankle, sacroiliac joints, arthralgias, ankylosing spondylitis, rheumatoid arthritis, sacroiliitis
	Erythema nodosum, iridocyclitis, conjunctivitis, gastrointestinal complaints, abdominal pain, diarrhea, ulcerative colitis, nephritis, insulin-dependent diabetes mellitus, hepatitis (ANA positive, rheumatoid factor positive), myocarditis (rare), central and peripheral nervous system manifestations, multisystem disease
	Disease progression in stages with intervals of fewer complaints
	Correlation with thyroiditis
	Positive LTT
	Oscillating serological findings (correlation with disease expression)