“…In the present study, the general symptoms and signs of the patients in descending order consisted of oedema, ptosis, facial pain, headache, blindness, nasal discharge, a decrease in facial sensation, nausea and vomiting, visual deficiency, ptosis, fever and nasal necrosis; the oral manifestations in these patients consisted of palatal necrosis, palatal ulcers, aphthous and lesions on the tongue, respectively (Table ). The clinical symptoms include fever, malaise, headache, pain in the orbital area, sinusitis, sudden loss of vision, proptosis, ptosis, diplopia, nasal discharge and facial anesthesia . The incidence of fever is variable and not be seen in half of the patients …”