Results: Average age: 28.2 ± 21, 058; male / female is 1.5/1; symptoms: headache (73.3%); vomiting, nausea (60%); fatigue, poor appetite (62.2%); perceptual disturbances (37.8%); clinical diagnosis: Stage I: 26.7%; stage II: 48.9%; stage III: 24.4%.