If you are experiencing muffled hearing, accompanied by a sensation of fullness, or pressure in your ear canal, then you may be suffering from a condition, commonly known as ear congestion. A source of great discomfort, ear congestion mainly occurs when your Eustachian tube, a small canal running between your nose and your middle ear, becomes obstructed and is not able to function properly.There Are a Number of Factors Which Can Cause This C...