Possible causes of panic, shortness of breath, dizziness and fatigue include heart failure, chronic bronchitis, diabetes mellitus, anemia and hypokalemia. 1. Heart failure: the heart’s function decreases and leads to stagnation of blood in the pulmonary circulation or body circulation, and insufficient blood supply causes dyspnea, edema, fatigue and other clinical symptoms. 2. Chronic bronchitis: chronic non-specific inflammation of the trachea, bronchial mucosa and surrounding tissues, mainly coughing up sputum as the main symptom, when infection, exertion and combined with emphysema after panic, fatigue, shortness of breath and other symptoms. 3. Diabetes mellitus: due to abnormalities in the regulation and utilization of blood sugar, when hypoglycemia occurs, symptoms such as panic, fatigue, dizziness will be manifested. 4. Anemia: it refers to the insufficiency of peripheral blood erythrocytes or hemoglobin in the human body, which cannot provide normal oxygen supply to tissues and organs, thus causing symptoms such as dizziness, headache, panic, pale skin and mucous membranes, and so on. 5. Low blood potassium: Normal human blood potassium is 3.5mmol/L~5.5mmol/L. When blood potassium is too low, it affects the excitability of the heart muscle and the nervous system and causes dizziness, panic and other symptoms. When symptoms such as panic, shortness of breath, dizziness and fatigue occur, they can also be seen in other diseases, and should go to the hospital in time to avoid delaying the condition.