Petechial lesions of the infraorbital sinuses are often settlement SH2 hemolytic and positive microorganisms.

This injury apparently irrelevant is the origin of other diseases due to bacterial toxins are removed from there into the bloodstream causing respiratory diseases and deferred joint syndrome (sinusitis, tracheitis, tendinitis), skin and kidneys (dermonecrotic toxin) observed breeding birds or broilers over 60 days old.