The âshellâ or âcaseâ is the outer covering of a hearing aid, and determines its style. Of the many parts of a hearing aid, style can make a big difference to your overall satisfaction. Beltone's two main style categories are Behind-the-Ear (BTE) and Custom hearing aids. IIC. Invisible-in-Canal.
The symptoms of chest congestion can be listed as under. 1  Coughing. 2  Shortness of breath. 3  Labored breathing.  Chest 1  pain. Dizziness.  Runny 1  nose. Wheezing. 2  Discomfort. Blood in  cough. Loud noises while breathing.
Nasal congestion is a stuffy nose, and can be accompanied by blocked ears, sore throat, and more. Hay fever Hay fever, an allergic reaction to outdoor pollens and molds, causes nasal congestion, itchy eyes, and more. Indoor allergens. Indoor allergens are the things that cause an allergic reaction: dust, dust mites, mold, pet hair and more. Nasal polyps. Nasal polyps, sacs of inflamed tissue in the nasal passages, can cause cold symptoms, snoring, and more.