From time to time to draw breath, the possible causes are allergic asthma, autonomic dysfunction, angina and so on.
1. Allergic asthma: usually by external allergen stimulation, emotional excitement and other knit, can lead to allergic asthma, the onset of the patient can be manifested as involuntary sudden inhalation of air, cough, and even dyspnea and other symptoms.
2. autonomic dysfunction: autonomic dysfunction may be triggered by nervousness, emotional anxiety, hormonal changes in the body or psychological factors, the onset of the patient manifested as involuntary inhalation, but also may appear panic, shortness of breath, accompanied by pain, fatigue and other symptoms.
3. Angina pectoris: If the patient himself exists arteriosclerosis, cardiovascular blood supply insufficiency and other cardiovascular diseases, angina pectoris attack, angina pectoris attack, the patient may appear from time to time to draw breath, shortness of breath, chest tightness, chest pain and other symptoms.
When angina attack occurs, the patient may experience occasional shortness of breath, shortness of breath, chest tightness, chest pain and other symptoms.