10 Common Symptoms and Signs of Ear Infections

Trouble sleeping. An ear infection can cause sinus build-up and make sleeping difficult. Lying flat can lead to sharp pain, sinus pressure and difficulty breathing through the nostrils. Fluid in the middle ear creates a blockage in the eustachian tube, which connects the ear to the upper throat. Lying down to sleep can increase the pressure on the middle ear, which leads to more pain and a sensation of fullness. Resting upright, either in a chair or on pillows, can help the ear drain faster.