Question: Less than a month ago after a group of wasps stung dizziness, weakness

The condition: less than a month ago the body (especially the back and head back of the head) is a large wasp stung promptly taken to the hospital after treatment, blood test results are normal, the hospital has a hospital, according to the report, but the patient still dizziness, significant fatigue, prolonged standing can not walk, loss of appetite than normal deviation ...Question: Less than a month ago after a group of wasps stung dizziness, weakness