Why do you always feel breathless?

I feel difficult to breathe. The possible reasons are as follows:

Due to respiratory diseases, including:

Upper respiratory tract diseases

Retropharyngeal abscess, tonsillar enlargement, foreign body in larynx, laryngeal edema, laryngeal cancer, etc.

Bronchial diseases

Stenosis and obstruction caused by bronchitis, bronchial asthma, bronchiectasis, bronchial foreign bodies and tumors.

pulmonary tuberculosis

Chronic obstructive pulmonary disease (COPD) includes pneumonia, tuberculosis, pulmonary congestion, atelectasis, pulmonary edema, pulmonary cyst's disease, pulmonary infarction, lung cancer, sarcoidosis, pulmonary fibrosis, acute respiratory distress syndrome (ARDS) and so on.

pleural diseases

Spontaneous pneumothorax, massive pleural effusion, severe pleural adhesion and thickening, pleural stromal tumor, etc.

Chest wall disease

Chest deformity, chest wall inflammation, tuberculosis, trauma, rib fracture, rheumatoid spondylitis, chest wall respiratory muscle paralysis, scleroderma, myasthenia gravis, obesity, etc.

Mediastinal diseases

Mediastinal inflammation, emphysema, hernia, aortic aneurysm, lymphoma, teratoma, intrathoracic thyroid tumor, thymoma, etc.

Seek medical attention if necessary.