To begin an etching, an artist must first coat a blank copper plate with wax. Using a steel needle, she draws her intended picture through the wax and onto the metal. The metal is then submerged into a bath of acid and left for about two hours.
The majority of people with a GERD-induced cough donât have classic symptoms of the disease such as heartburn. Chronic cough can be caused by acid reflux or the reflux of nonacidic stomach contents. Some clues as to whether a chronic cough is caused by GERD include: coughing mostly at night or after a meal.
Postnasal drip creates an annoying feeling that makes you want to constantly clear your throat. Because the feeling of the liquid in your throat is irritating and contains inflammatory substances, postnasal drip also can trigger a cough, which often gets worse at night. In fact, postnasal drip is the most common cause of chronic cough. Excess mucus running down your throat may also make you feel hoarse and give you a sore throat. If the mucus plugs up the Eustachian tube -- the tube that connects the throat to the middle ear -- it can lead to a painful ear infection. When mucus blocks the sinus passages, it can lead to a sinus infection.