Ear Crackling Sounds: Causes and Management Ear crackling sounds can be caused by various factors, including earwax blockage, abnormal Eustachian tube function, middle ear infections, Meniere’s disease, and acoustic neuroma. If individuals experience persistent tinnitus or symptoms such as hearing loss and dizziness, they should seek medical attention promptly. Earwax Blockage Excessive earwax production or obstruction in the ear canal can lead to a buildup of wax, potentially irritating the eardrum and causing crackling sounds in the ear. This condition may also result in a feeling of fullness in the ear and a decrease in hearing. Abnormal Eustachian Tube Function... Learn more