Previously, the diagnosis of mesothelioma in its early days was a difficult and almost impossible, because the first symptoms of the disease resemble those of other similar diseases, and sometimes the basic illnesses. The severity of mesothelioma is defined by four stages, with a poorer prognosis than is progressing at each step, so the discovery of symptoms in the first two stages is essential to ensure a longer life expectancy of mesothelioma. Moreover, the difficulty of diagnosis of mesothelioma is caused by a significant latency, which means it can take decades between exposure to asbestos and the onset of symptoms. However, if you or a loved one has been exposed to asbestos and experience symptoms such as chest pain, severe cough, and fatigue, it is essential that you consult a doctor immediately.