Lung cancer is often detected late because its early symptoms resemble minor illnesses like colds or allergies. “Patients may underestimate the severity,” missing the chance for early treatment. It develops when lung cells grow uncontrollably, forming tumors that can spread. The disease can progress silently for years, making early detection difficult.

**Persistent Cough**
A cough lasting more than three weeks, especially without fever or flu, may signal lung cancer. Many ignore it, blaming weather or pollution, but “using cough medicine without checking the real cause can allow the disease to silently progress.”

**Shortness of Breath**
Difficulty breathing during normal activities, such as climbing stairs, can result from tumors blocking airways. This is riskier for smokers or those exposed to harmful chemicals.

**Chronic Chest Pain**
Persistent sharp, tight, or dull chest pain that worsens over time should not be ignored. It’s often mistaken for muscle or heart problems but may be an early cancer sign.

**Sudden Weight Loss**
Losing weight without changing diet or exercise could mean cancer cells are using the body’s energy. If paired with fatigue or loss of appetite, seek medical help.

Regular check-ups and attention to these symptoms can save lives.