There are differences that relate to the techniques used in cooking. A thin copper pan is great for melting butter or chocolate straight on the burner. Modern air-gap wall stainless steel pans hold the heat better and work better for simmering or boiling. Copper is harder to upkeep. Pans will develop hot spots, even copper which is the better conductor.
Common causes of chronic cough include: 1  Postnasal drip â This is a sensation of mucus trickling from the back of your nose down into your throat. It may be due to hay fever, allergies or irritants. 2  Asthma â While unusual, asthma can present with only a cough. This is known as cough variant asthma.
Causes of Coughs. Acute coughs can be divided into infectious (caused by an infection) and noninfectious causes. 1  Infectious causes of acute cough include viral upper respiratory infections (the common cold), sinus infections, acute bronchitis, pneumonia, and whooping cough. Within the lungs both common and uncommon conditions cause chronic cough. 2  Common causes include asthma, emphysema, and chronic bronchitis. 3  Less common causes of lung-induced chronic cough include cancer, sarcoidosis, diseases of the lung tissue, and congestive heart failure with chronic fluid build-up in the lungs.