Lung cancer is a formidable adversary, often presenting with subtle symptoms in its early stages. Recognizing these signs can be crucial for early detection and intervention, significantly improving the chances of successful treatment. Here are some key symptoms to be aware of:

1. Persistent Cough: One of the early indicators of lung cancer is a persistent cough that lingers for weeks or months. This cough may be dry or produce phlegm, and it is essential to pay attention if it doesn’t seem to resolve with common treatments.
2. Shortness of Breath: Individuals with lung cancer may experience shortness of breath, even with minimal physical exertion. This symptom can be attributed to the tumor obstructing the airways or 肺癌症狀為背痛咳嗽？ 病徵逐個睇 — 呼吸希望 與肺癌共存 causing fluid buildup in the lungs.
3. Chest Pain: Lung cancer can cause chest pain that may be felt in the chest, shoulder, or back. The pain can be dull or sharp and may worsen with deep breathing, coughing, or laughing.
4. Unexplained Weight Loss: Significant and unexplained weight loss can be a red flag for various health issues, including lung cancer. Cancer cells often consume a considerable amount of energy, leading to weight loss even when the individual is not actively trying to lose weight.
5. Fatigue: Chronic fatigue is a common symptom of lung cancer, and it may persist despite adequate rest. The cancer’s impact on the body’s energy levels and the immune system can contribute to overwhelming fatigue.
6. Hoarseness: A persistent hoarse or raspy voice can be indicative of lung cancer. Tumors in the lungs may affect the vocal cords or irritate the nerves controlling them.
7. Coughing up Blood: Hemoptysis, or coughing up blood, is a concerning symptom that requires immediate medical attention. While it may have other causes, such as infections, it is crucial to rule out lung cancer, especially in smokers or those with a history of exposure to lung cancer risk factors.

Early detection of lung cancer significantly improves the chances of successful treatment. If you or someone you know experiences these symptoms, it is imperative to consult a healthcare professional promptly. Regular health check-ups and lung cancer screenings are particularly important for individuals at higher risk, such as smokers and those with a family history of the disease.