Postlingual hearing loss refers to hearing loss that occurs:

Postlingual hearing loss specifically refers to the loss of hearing that occurs after a person has developed language skills, which typically happens sometime during early childhood. Individuals who experience postlingual hearing loss have already acquired the ability to speak and understand language prior to the onset of their hearing impairment. This distinction is crucial in special education as it influences the strategies educators may employ to support affected individuals, especially in communication and social integration.

In contrast, hearing loss that occurs before language development, at birth, or that is strictly age-related fits into different categories. Knowing that postlingual hearing loss happens after language development helps in tailoring interventions that focus on maintaining and improving communication skills, as these skills are already established prior to the loss.