This is Dr Basu, experienced Internal Medicine Specialist.
I am here to address your concerns and provide great service.
Dry cough is commonly caused by the environmental allergies.
Viral infection also can cause this.
Medications like lisinopril also can cause dry cough as side effect without any serious consequences.
Cancer causes other symptoms like blood in phlegm, weight loss etc.
Chest Xrays should be considered for any cough lasting more than a month.
Normal chest xray rules out any cancer.
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