Irritation symptoms appear to the eye and upper respiratory tract in methyl bromide fumigation environment: simple blisters appear after skin contact with methyl bromide; dizziness, fatigue, sickness and other symptoms of nerve system appear, but with fewer symptoms and, to a lesser extent , which will recover in 24 hours of disengagement. In this case, hen the patient need to Be listed as observation object.

    Significant dizziness, headache, fatigue, loss of appetite, sickness, vomiting, coughing, chest tightness and other symptoms appear after several hours to several days’ incubation period after contacting with methyl bromide, along with emergence of drowsiness, staggering gait, faltering words or diplopia; mild breathing difficulty, a small amount of dry and wet rales could be heard in the lung,; blood bromine may arise, and a small amount of prote-in may appear in urine. In this case the patient can be diagnosed as mildly poisoned.

    In addition to the clinical manifestations of mildly poisoned, there appears brain edema, such as coma, convulsions or epilepsy in a continuous state; pulmonary edema; renal failure; shock and other symptoms. In this case, the patient can be diagnosed as severely poisoned.