Earwax is important in assisting the cleaning and lubrication of the ear, while also protecting from bacteria, insects, and fungi. But when it builds up, it is a common cause of ear problems. Excess earwax can press against the ear drum and block the external auditory canal impairing hearing. Itching, dryness, and pain are other symptoms. Taking care of your ears is a small price to pay in return for what they do for you.