Single-sided deafness (SSD), or being deaf in one ear, isn’t exactly the poster-child for disabilities. Rather, it’s an overlooked condition that is often misunderstood by the public. There is no way to see SSD, also called profound unilateral hearing loss, so those who suffer from it are often misperceived as “rude” or “unintelligent” when they don’t understand or quickly respond to others. That’s just one of the many hidden struggles associated with this condition.