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Occupational asthma symptoms
Typical symptoms: wheezing, shortness of breath, chest tightness and coughing
Typical occupational asthma is cough, wheezing, chest tightness or symptoms such as rhinitis and conjunctivitis during or after work. The occurrence of symptoms is closely related to the working environment. The rapid-onset asthma reaction induced by high-molecular-weight occupational asthmatic is manifested as asthma symptoms when the patient enters the work environment, and the symptoms are quickly relieved after leaving the scene, with exposure to the working environment-asthma attack-leaving the working environment-asthma relief-again Characteristics of recurrent exposure. Occupational asthma induced by low-molecular-weight wheezing substances is manifested as a delayed asthma response. Asthma symptoms appear at a certain time after work, so it is easy to be ignored or misdiagnosed.
There is no uniform standard for the diagnosis of occupational asthma. First of all, the diagnosis of asthma must be established, and then the relationship between asthma attack and occupation must be further judged, and the cause of asthma must be found. The main points are as follows.
1. The diagnosis of asthma is clear. According to the diagnostic criteria of asthma, the diagnosis can be confirmed based on the history, clinical manifestations, signs at the onset of symptoms, combined with laboratory tests such as pulmonary function determination.
2. Clarify the relationship between asthma and occupation. Ask the patient's current medical history and past history carefully, usually clues can be obtained. Asthma can be suspected in the following situations, such as the patient has no history of asthma, has asthma after starting a new job or exposed to new materials at work; the patient has asthmatic in the working environment; colleagues working in the same environment have similar attacks Case: The asthma attack is related to the work environment, and the symptoms are relieved after work or transfer.
3. Looking for occupational asthmatics. Specific laboratory tests such as specific skin tests, serological tests and specific bronchial provocation tests can help to find occupational asthmatic factors. At present, the specific bronchial provocation test is considered to be the most valuable diagnostic method for screening occupational asthmatics.
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