There are many reasons for weakness and panic, the common ones are: 1, heart disease, such as myocardial ischemia, heart disease need to go to the hospital in a timely manner to perform electrocardiogram and other related examinations, after clarifying the situation to actively improve microcirculation, improve myocardial blood supply treatment. 2, this situation is also seen in hypoglycemic episodes, mostly seen in diabetic patients or people on a diet, there will be panic, weakness, darkness, sweating and even coma, The condition can be relieved by giving oral sugar water or eating a sugar cube, but serious cases require hospital consultation to replenish sugar. 3, also seen in plant nerve dysfunction, also known as neurosis, characterized by a variety of symptoms are obvious, but after objective examination did not find the presence of disease.