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.
Hay fever is an example of an allergy caused by dust and pollen. This allergy is also called allergic rhinitis. Its symptoms include sneezing, soar throat or scratchy throat, congestion in the nasal cavity, head aches and watery eyes. To treat this allergy, anti histamines can be used.