Can it cause shortness of breath when the weather is very hot?

It is probably caused by psychological factors. No one will feel comfortable when it is hot. It's normal to feel breathless and bored.

Shortness of breath is a symptom of subjective dyspnea. Chest tightness and shortness of breath are caused by both organic and functional reasons. 1. Chest tightness caused by organic reasons: 1. Cardiogenic chest tightness-manifested as chest tightness after fatigue, dyspnea, or paroxysmal dyspnea at night, patients can hold it while sleeping, which can be seen in heart disease patients with pulmonary congestion, cardiac insufficiency, and pulmonary congestion when lying down. Chest tightness can also be the manifestation of myocardial ischemia caused by coronary heart disease. Second, chest tightness caused by lung diseases-seen in bronchial asthma, pleural effusion, pulmonary fibrosis, etc. Chest tightness caused by functional reasons is the most common in cardiovascular dysfunction. Patients feel chest tightness, shortness of breath, subjective lack of breath, poor breathing, frequent sighing, and feel comfortable after breathing; It is often accompanied by palpitation, tingling in the precordial area, and neurological symptoms such as fatigue, dizziness, confusion, panic, anxiety, sweating and insomnia. The disease is mostly young women with obvious symptoms, but no organic lesions were found in ECG, B-ultrasound and chest X-ray examination. The difference between organic chest tightness and functional chest tightness is that organic chest tightness often occurs after exercise or fatigue, while functional chest tightness. After sitting up, the organic chest tightness can be obviously improved, while the functional chest tightness often does not change because of the change of posture. Talking can cause chest tightness and shortness of breath. If it is chest tightness caused by pathological or organic heart disease, it means that cardiopulmonary failure is serious, because it is generally effortless to speak unless you speak loudly for a long time. If there are no symptoms of chest tightness and shortness of breath during activities, speaking will cause chest tightness and shortness of breath. This is not consistent with chest tightness and shortness of breath after heart disease fatigue. Even if myocardial ischemia occurs due to coronary heart disease, it will not cause ischemic symptoms because of speaking. Therefore, this situation often suggests that it is a functional chest tightness symptom caused by mental reasons. The mechanism of chest distress caused by cardiovascular dysfunction is autonomic nerve dysfunction and increased sympathetic nerve tension, which causes a series of functional symptoms and manifestations of cardiovascular system. When there are symptoms of chest tightness and shortness of breath, you can do a chest X-ray. Electrocardiogram, echocardiography and other examinations, if no abnormalities are found, are mostly neurological symptoms, so don't worry too much. After mental conditioning, physical enhancement, or necessary rest and medication, it will gradually improve and cure.