Symptoms of hearing disorders can occur suddenly or may develop gradually over time, affect one or both sides, or be complete, incomplete, or fluctuating. It can appear as a loss of sound localization, distortion of sound, hyperacusis, or tiredness due to constantly concentrating when trying to hear the surroundings. Tinnitus, with or without hearing loss, is also a symptom of hearing disorders. In children, delayed speech development or behavioral and concentration difficulties can turn out to be caused by hearing disorders.
With balance disorders, we mean vertigo, dizziness, and postural instability. These symptoms may present as acute, persistent vertigo, short attacks (hours), or paroxysms (seconds/minutes) but also as chronic conditions. Balance disorders are often associated with moderate to high grades of invalidity and inability. Nausea or vomiting, but often neurological or hearing manifestations, may complicate the clinical presentation. The diagnosis of balance disorders is challenging, involving different organs/functions with balance manifestations that appear similar, and lacking in specificity. In children, balance disorders may alter normal motor development with motor delays and suboptimal motor proficiency in school children.