A persistent cough can have many causes and, in some cases, may warrant further medical evaluation, Russian physician and television presenter Alexander Myasnikov has said, according to MedikForum.
Myasnikov noted that a long-lasting or changing cough in smokers and former smokers can sometimes be associated with lung cancer. He advised people whose cough persists for more than a month after quitting smoking to discuss further evaluation with a doctor.
Particular attention should be paid to symptoms such as blood in the sputum or unexplained weight loss, especially when the cough cannot be explained by pneumonia or another respiratory infection.
Myasnikov also said that a standard chest X-ray may not detect every lung tumor. Depending on a patient’s symptoms and risk factors, a doctor may therefore recommend more detailed imaging, such as a CT scan.
However, persistent coughing is not specific to lung cancer. It can result from numerous conditions, including respiratory diseases, acid reflux, certain medications and some cardiovascular problems.
A chronic unexplained cough—particularly when accompanied by coughing up blood, unexplained weight loss, shortness of breath or chest pain—should be assessed by a healthcare professional rather than self-diagnosed.
Importantly, high cholesterol or borderline blood sugar alone should not be assumed to be the cause of a chronic cough. Determining the underlying reason requires appropriate medical evaluation.
